WEBVTT 00:00:00.000 --> 00:00:02.500 align:middle line:90% [SQUEAKING] 00:00:02.500 --> 00:00:04.000 align:middle line:90% [RUSTLING] 00:00:04.000 --> 00:00:07.000 align:middle line:90% [CLICKING] 00:00:07.000 --> 00:00:08.533 align:middle line:90% 00:00:08.533 --> 00:00:09.950 align:middle line:84% MICHAEL SCOTT ASATO CUTHBERT: This 00:00:09.950 --> 00:00:14.090 align:middle line:84% is a short video following up on the unlocking of pitches, 00:00:14.090 --> 00:00:19.430 align:middle line:84% where we will unlock duration and note objects in music21. 00:00:19.430 --> 00:00:22.490 align:middle line:84% Go ahead and start up your Jupyter Notebook, 00:00:22.490 --> 00:00:26.210 align:middle line:90% and let's get programming. 00:00:26.210 --> 00:00:28.730 align:middle line:90% Start with durations. 00:00:28.730 --> 00:00:32.670 align:middle line:84% So go ahead and from music21 import duration. 00:00:32.670 --> 00:00:37.760 align:middle line:84% And that thing we've just imported-- duration-- 00:00:37.760 --> 00:00:40.730 align:middle line:84% put a thumbs up if it's an object. 00:00:40.730 --> 00:00:44.840 align:middle line:84% Put a thumbs down if you think it's a module 00:00:44.840 --> 00:00:45.480 align:middle line:90% OK. 00:00:45.480 --> 00:00:49.190 align:middle line:90% So in this case, it is a module. 00:00:49.190 --> 00:00:51.380 align:middle line:84% If you didn't get it right no worries, 00:00:51.380 --> 00:00:55.080 align:middle line:84% because there is no way you can actually tell just from that, 00:00:55.080 --> 00:00:56.490 align:middle line:90% except for by convention. 00:00:56.490 --> 00:00:59.890 align:middle line:84% Python, by convention, we write our modules in lowercase. 00:00:59.890 --> 00:01:03.520 align:middle line:84% We can see that it's a module by checking its type. 00:01:03.520 --> 00:01:04.175 align:middle line:90% Yay, good. 00:01:04.175 --> 00:01:04.682 align:middle line:90% Phew. 00:01:04.682 --> 00:01:05.890 align:middle line:90% It'd be terrible if I didn't. 00:01:05.890 --> 00:01:10.230 align:middle line:84% Within the module, there is usually an object 00:01:10.230 --> 00:01:12.190 align:middle line:90% with the same name as it. 00:01:12.190 --> 00:01:15.790 align:middle line:84% I hit tab and I get, oh, there is a Duration object. 00:01:15.790 --> 00:01:18.700 align:middle line:84% So we'll create one, assign it to d. 00:01:18.700 --> 00:01:23.340 align:middle line:84% And I'm going to create a duration of 3.0. 00:01:23.340 --> 00:01:25.770 align:middle line:84% What I want you to do is open up the chat, 00:01:25.770 --> 00:01:30.450 align:middle line:84% and don't yet hit enter on it-- but if you could put what 00:01:30.450 --> 00:01:33.386 align:middle line:90% you think 3.0 might represent. 00:01:33.386 --> 00:01:40.290 align:middle line:90% 00:01:40.290 --> 00:01:40.830 align:middle line:90% Yep. 00:01:40.830 --> 00:01:44.670 align:middle line:84% So we have a lot of beats going on. 00:01:44.670 --> 00:01:48.390 align:middle line:84% Some-- I like qualification with some standard of how long 00:01:48.390 --> 00:01:49.680 align:middle line:90% a beat is. 00:01:49.680 --> 00:01:52.810 align:middle line:84% And we also have dotted half and things like that. 00:01:52.810 --> 00:01:56.200 align:middle line:84% Nobody seems to like our favorite thing, milliseconds. 00:01:56.200 --> 00:02:02.250 align:middle line:84% Maybe if I had purposely made my thing 3,000, 00:02:02.250 --> 00:02:04.600 align:middle line:84% then people would have thought that. 00:02:04.600 --> 00:02:05.440 align:middle line:90% But it is a flow. 00:02:05.440 --> 00:02:07.230 align:middle line:84% It could be seconds or something. 00:02:07.230 --> 00:02:09.780 align:middle line:84% In this case, we'll figure it out. 00:02:09.780 --> 00:02:13.450 align:middle line:84% Well, OK, that doesn't tell us much of anything. 00:02:13.450 --> 00:02:18.420 align:middle line:84% And what we can do is, we can get the full name of this 00:02:18.420 --> 00:02:25.300 align:middle line:84% and see it is a dotted half, so it could be beats still. 00:02:25.300 --> 00:02:28.140 align:middle line:84% I'll just go ahead and say, in music 21, 00:02:28.140 --> 00:02:32.280 align:middle line:84% I made the decision to have the number represent 00:02:32.280 --> 00:02:35.740 align:middle line:90% the number of quarter notes. 00:02:35.740 --> 00:02:38.700 align:middle line:84% Over time, I have sometimes regretted that decision. 00:02:38.700 --> 00:02:40.780 align:middle line:90% But they had to be something. 00:02:40.780 --> 00:02:45.570 align:middle line:84% And one of the reasons I decided not to go with beats 00:02:45.570 --> 00:02:49.120 align:middle line:90% is that the length-- 00:02:49.120 --> 00:02:52.050 align:middle line:84% the representation of a note, in terms of beats, 00:02:52.050 --> 00:02:54.700 align:middle line:84% is dependent on something external. 00:02:54.700 --> 00:02:57.590 align:middle line:84% And that is the time signature, right? 00:02:57.590 --> 00:03:04.240 align:middle line:84% So 2/2 has a different type of beat from 6/8, 00:03:04.240 --> 00:03:06.980 align:middle line:84% which has a different type of beat from 4/4. 00:03:06.980 --> 00:03:10.790 align:middle line:84% So that's one of the reasons going with this. 00:03:10.790 --> 00:03:14.330 align:middle line:84% So every Duration object has a full name. 00:03:14.330 --> 00:03:16.630 align:middle line:90% It also has a type-- 00:03:16.630 --> 00:03:20.530 align:middle line:90% half-- and it has dots. 00:03:20.530 --> 00:03:22.600 align:middle line:90% It's great. 00:03:22.600 --> 00:03:25.990 align:middle line:84% It also has something called quarterLength, 00:03:25.990 --> 00:03:29.780 align:middle line:84% which in this case is the number of quarters. 00:03:29.780 --> 00:03:30.860 align:middle line:90% And that's not so bad. 00:03:30.860 --> 00:03:33.890 align:middle line:84% But that's something you already knew how to do. 00:03:33.890 --> 00:03:38.210 align:middle line:84% But maybe we can create a duration in a different way. 00:03:38.210 --> 00:03:43.430 align:middle line:84% We'll say type='whole' and dots=4. 00:03:43.430 --> 00:03:48.550 align:middle line:84% And suddenly, the quarter length of this 00:03:48.550 --> 00:03:50.860 align:middle line:84% is a little bit harder to compute. 00:03:50.860 --> 00:03:54.050 align:middle line:84% Anybody know off the top of their head? 00:03:54.050 --> 00:03:57.420 align:middle line:84% Right, you're all too shy to say 7.75. 00:03:57.420 --> 00:03:58.320 align:middle line:90% OK, good. 00:03:58.320 --> 00:04:00.180 align:middle line:90% Well, I don't know that number. 00:04:00.180 --> 00:04:06.020 align:middle line:84% OK, so here are some of the things that we can do. 00:04:06.020 --> 00:04:09.780 align:middle line:90% Can we create a triplet? 00:04:09.780 --> 00:04:11.020 align:middle line:90% Let's try that. 00:04:11.020 --> 00:04:16.279 align:middle line:90% 00:04:16.279 --> 00:04:19.519 align:middle line:84% 1/3 of a note-- so what kind of a triplet is that? 00:04:19.519 --> 00:04:22.220 align:middle line:90% Somebody shout it out. 00:04:22.220 --> 00:04:24.163 align:middle line:84% AUDIENCE: An eighth note triplet? 00:04:24.163 --> 00:04:25.830 align:middle line:84% MICHAEL SCOTT ASATO CUTHBERT: Let's see. 00:04:25.830 --> 00:04:28.220 align:middle line:90% Type-- yay, eighth note triplet. 00:04:28.220 --> 00:04:30.740 align:middle line:90% So we can create triplets. 00:04:30.740 --> 00:04:34.190 align:middle line:84% Notice-- we'll go back to d here. 00:04:34.190 --> 00:04:38.190 align:middle line:84% Notice that some durations are expressed in floats. 00:04:38.190 --> 00:04:41.520 align:middle line:84% Some are expressed in rational fractions. 00:04:41.520 --> 00:04:44.360 align:middle line:84% And that tells you whether or not 00:04:44.360 --> 00:04:46.880 align:middle line:84% you're going to safely be able to add them up 00:04:46.880 --> 00:04:48.840 align:middle line:90% and get an exact number. 00:04:48.840 --> 00:04:52.310 align:middle line:84% Anything that's a multiple of a power of 2 in binary 00:04:52.310 --> 00:04:54.430 align:middle line:90% will be exactly representable. 00:04:54.430 --> 00:04:56.240 align:middle line:84% Anything that isn't will be here. 00:04:56.240 --> 00:04:56.740 align:middle line:90% So great. 00:04:56.740 --> 00:05:01.080 align:middle line:90% So trip, its type is eighth. 00:05:01.080 --> 00:05:02.830 align:middle line:84% So that doesn't tell me anything about it. 00:05:02.830 --> 00:05:05.050 align:middle line:90% Its dots, I hope, are 0. 00:05:05.050 --> 00:05:06.370 align:middle line:90% There's no dots there. 00:05:06.370 --> 00:05:07.560 align:middle line:90% Great. 00:05:07.560 --> 00:05:12.760 align:middle line:84% So there is something called tuplets, 00:05:12.760 --> 00:05:15.120 align:middle line:90% which a tuplet is a type of-- 00:05:15.120 --> 00:05:17.700 align:middle line:84% like, a quadruplet, a quintuplet. 00:05:17.700 --> 00:05:19.510 align:middle line:90% Triplet is the one we most know. 00:05:19.510 --> 00:05:20.010 align:middle line:90% Great. 00:05:20.010 --> 00:05:23.050 align:middle line:84% What I want you to do is, take a second and put in the chat, 00:05:23.050 --> 00:05:29.310 align:middle line:84% what kind of object was just returned from dot tuplets? 00:05:29.310 --> 00:05:33.670 align:middle line:84% OK, we have a couple different answers. 00:05:33.670 --> 00:05:36.760 align:middle line:84% But most people say it's a tuple-- 00:05:36.760 --> 00:05:39.480 align:middle line:90% a tuple of tuplets, which-- 00:05:39.480 --> 00:05:41.490 align:middle line:84% try not to say that too many times fast. 00:05:41.490 --> 00:05:44.730 align:middle line:84% And you know it's a tuple because it 00:05:44.730 --> 00:05:46.900 align:middle line:90% has this comma at the end. 00:05:46.900 --> 00:05:50.410 align:middle line:84% So it's an immutable-- a list of it. 00:05:50.410 --> 00:05:53.140 align:middle line:84% And that means you can have more than one template. 00:05:53.140 --> 00:05:56.710 align:middle line:84% So you might have a triplet within a triplet and so on. 00:05:56.710 --> 00:06:01.050 align:middle line:84% So those are some things we can do. 00:06:01.050 --> 00:06:03.840 align:middle line:84% So we can get at that darn tuplet object. 00:06:03.840 --> 00:06:06.450 align:middle line:84% I'm just trying to pull it out, pull it out. 00:06:06.450 --> 00:06:07.510 align:middle line:90% Oh, right. 00:06:07.510 --> 00:06:09.160 align:middle line:84% It's not a graphical environment. 00:06:09.160 --> 00:06:11.950 align:middle line:90% So we'll get the first one. 00:06:11.950 --> 00:06:14.730 align:middle line:90% We'll call it t. 00:06:14.730 --> 00:06:20.200 align:middle line:84% And we'll see that the tuplet itself is also a complex object. 00:06:20.200 --> 00:06:22.230 align:middle line:90% We can dir it. 00:06:22.230 --> 00:06:26.790 align:middle line:84% And we can see it has certain things like, tupletMultiplier, 00:06:26.790 --> 00:06:30.190 align:middle line:84% which I happen to know is a method. 00:06:30.190 --> 00:06:34.720 align:middle line:84% And so we can see that when you throw this tuplet onto a note, 00:06:34.720 --> 00:06:37.867 align:middle line:84% that note becomes 2/3 of its previous. 00:06:37.867 --> 00:06:39.700 align:middle line:84% Here are just some of the things you can do. 00:06:39.700 --> 00:06:46.620 align:middle line:84% You will learn this in the music 21 user's guide 00:06:46.620 --> 00:06:49.140 align:middle line:84% 2 and 3, which we'll get to in a bit. 00:06:49.140 --> 00:06:54.880 align:middle line:84% Some of the things you might see are duration-- 00:06:54.880 --> 00:06:59.440 align:middle line:90% that, obviously, 4 is a whole. 00:06:59.440 --> 00:07:01.700 align:middle line:84% For people who like these things, 00:07:01.700 --> 00:07:06.250 align:middle line:84% 8 is a double whole note, also called a breve, 00:07:06.250 --> 00:07:10.210 align:middle line:84% which means short, because there used to be longer notes. 00:07:10.210 --> 00:07:11.720 align:middle line:90% And they're still somewhere. 00:07:11.720 --> 00:07:14.470 align:middle line:84% And that's the longest possible note, 00:07:14.470 --> 00:07:18.080 align:middle line:84% which no longer exists, except that somebody used a double, 00:07:18.080 --> 00:07:19.640 align:middle line:90% the longest possible note. 00:07:19.640 --> 00:07:22.100 align:middle line:84% But then at a certain point, you can't do it. 00:07:22.100 --> 00:07:25.365 align:middle line:84% Similarly, on the small side, you can go-- 00:07:25.365 --> 00:07:27.940 align:middle line:90% 00:07:27.940 --> 00:07:31.360 align:middle line:84% oops-- and let's get the type of that. 00:07:31.360 --> 00:07:36.890 align:middle line:84% Notice that the type of an eighth note is E-I-G-H-T-H. 00:07:36.890 --> 00:07:40.150 align:middle line:90% The type of a 16th note-- 00:07:40.150 --> 00:07:42.470 align:middle line:84% I misspelled 16th too many times. 00:07:42.470 --> 00:07:47.020 align:middle line:90% So I decided we'd go from here. 00:07:47.020 --> 00:07:50.250 align:middle line:84% I don't think I know my fractions below that, 00:07:50.250 --> 00:07:52.770 align:middle line:84% so we'll just keep going like that. 00:07:52.770 --> 00:07:54.630 align:middle line:90% You can go down pretty far. 00:07:54.630 --> 00:07:55.650 align:middle line:90% Let's skip a bit-- 00:07:55.650 --> 00:07:58.220 align:middle line:90% oops-- we're at 16. 00:07:58.220 --> 00:08:04.220 align:middle line:84% And you can go down to 1024th notes. 00:08:04.220 --> 00:08:05.880 align:middle line:84% Theoretically, notes go on forever. 00:08:05.880 --> 00:08:12.650 align:middle line:84% But music21 at a certain point says, this 00:08:12.650 --> 00:08:15.350 align:middle line:90% isn't representation music. 00:08:15.350 --> 00:08:16.200 align:middle line:90% Great. 00:08:16.200 --> 00:08:19.380 align:middle line:84% I want to do one more little exercise. 00:08:19.380 --> 00:08:21.570 align:middle line:90% And this is a trick question. 00:08:21.570 --> 00:08:24.920 align:middle line:84% So just put your head what you think. 00:08:24.920 --> 00:08:26.510 align:middle line:84% I'm going to sing something to you, 00:08:26.510 --> 00:08:29.750 align:middle line:84% and you tell me how many notes I sang. 00:08:29.750 --> 00:08:33.770 align:middle line:90% [SINGS NOTE] 00:08:33.770 --> 00:08:38.720 align:middle line:84% Yes, I sang a eighth note tied to a 32nd note because it was 00:08:38.720 --> 00:08:41.039 align:middle line:84% slightly longer than half of a beat in my head. 00:08:41.039 --> 00:08:43.057 align:middle line:84% So how do we deal with things like that? 00:08:43.057 --> 00:08:45.390 align:middle line:84% Well, let's make it a whole note tied to a quarter note. 00:08:45.390 --> 00:08:46.960 align:middle line:90% Let's say the duration was fast. 00:08:46.960 --> 00:08:48.910 align:middle line:90% So I'll call that an odd thing. 00:08:48.910 --> 00:08:52.710 align:middle line:84% And by the way, thank everybody for saying 1 and not 00:08:52.710 --> 00:08:56.110 align:middle line:84% saying 7 because Cuthbert warbles too much. 00:08:56.110 --> 00:09:02.230 align:middle line:84% But let's take that eighth note tied to a 32nd note. 00:09:02.230 --> 00:09:03.310 align:middle line:90% What is that? 00:09:03.310 --> 00:09:07.410 align:middle line:90% 0.125. 00:09:07.410 --> 00:09:10.000 align:middle line:84% So we can see that you can create things. 00:09:10.000 --> 00:09:11.650 align:middle line:90% And this says it's complex. 00:09:11.650 --> 00:09:15.120 align:middle line:84% It is a duration that has multiple-- 00:09:15.120 --> 00:09:21.360 align:middle line:84% what I call components, which there's an eighth and an eighth 00:09:21.360 --> 00:09:23.380 align:middle line:84% and a 32nd that are put together. 00:09:23.380 --> 00:09:29.190 align:middle line:84% And so what we mean by the length of a note 00:09:29.190 --> 00:09:32.640 align:middle line:84% and where a note splits will depend on the context 00:09:32.640 --> 00:09:34.120 align:middle line:90% that we want to use it. 00:09:34.120 --> 00:09:38.610 align:middle line:84% So if we're thinking about, hey, he just 00:09:38.610 --> 00:09:41.920 align:middle line:84% sang that note in a sound context, in a recording context, 00:09:41.920 --> 00:09:43.810 align:middle line:90% obviously, that's one note. 00:09:43.810 --> 00:09:47.130 align:middle line:90% There's no other way around it. 00:09:47.130 --> 00:09:49.835 align:middle line:84% But if we're thinking about it in a notation context 00:09:49.835 --> 00:09:51.210 align:middle line:84% and you're writing something that 00:09:51.210 --> 00:09:54.570 align:middle line:84% has to draw notes on a page, you're 00:09:54.570 --> 00:09:59.050 align:middle line:84% going to want to say that, well, that's actually two notes. 00:09:59.050 --> 00:10:02.190 align:middle line:84% Because there's no way to represent the duration that we 00:10:02.190 --> 00:10:05.555 align:middle line:90% heard with just one note. 00:10:05.555 --> 00:10:06.930 align:middle line:84% So some of the things we're going 00:10:06.930 --> 00:10:08.347 align:middle line:84% to be working on in this class is, 00:10:08.347 --> 00:10:11.890 align:middle line:84% how do we move from one representation to another 00:10:11.890 --> 00:10:16.680 align:middle line:84% so that we're always using the representation that is most 00:10:16.680 --> 00:10:18.340 align:middle line:90% appropriate for the situation? 00:10:18.340 --> 00:10:22.140 align:middle line:84% And so we'll spend a lot of time in this class working 00:10:22.140 --> 00:10:26.100 align:middle line:84% on translations among representations. 00:10:26.100 --> 00:10:32.940 align:middle line:84% Remember, you can always take the directory 00:10:32.940 --> 00:10:36.000 align:middle line:84% of music21 or any Python object to get 00:10:36.000 --> 00:10:38.490 align:middle line:90% some more things about it. 00:10:38.490 --> 00:10:43.420 align:middle line:84% But also, in Jupyter, you can put in question mark 00:10:43.420 --> 00:10:47.270 align:middle line:84% afterwards and get some docs or look at the docs online. 00:10:47.270 --> 00:10:49.840 align:middle line:84% So now you have unlocked pitches, 00:10:49.840 --> 00:10:52.490 align:middle line:90% and you have unlocked durations. 00:10:52.490 --> 00:10:57.880 align:middle line:84% Let's move on to the last thing that we want that we're 00:10:57.880 --> 00:10:59.120 align:middle line:90% going to unlock today. 00:10:59.120 --> 00:11:03.010 align:middle line:90% And those are notes. 00:11:03.010 --> 00:11:07.270 align:middle line:84% So there are a million ways we could 00:11:07.270 --> 00:11:10.450 align:middle line:90% have called something a note. 00:11:10.450 --> 00:11:14.480 align:middle line:84% We could say, a note is the same thing as a pitch. 00:11:14.480 --> 00:11:15.880 align:middle line:90% Some people say that. 00:11:15.880 --> 00:11:22.130 align:middle line:84% But here's how I have chosen, with my advisors and stuff, 00:11:22.130 --> 00:11:23.950 align:middle line:90% how to represent a note. 00:11:23.950 --> 00:11:28.730 align:middle line:84% A note takes in a string, just like a pitch, 00:11:28.730 --> 00:11:31.110 align:middle line:84% just like you saw in the pitch video. 00:11:31.110 --> 00:11:33.500 align:middle line:90% And it's called a note. 00:11:33.500 --> 00:11:37.430 align:middle line:84% It doesn't print the octave, for some reason. 00:11:37.430 --> 00:11:42.780 align:middle line:84% And it has a name, just like a pitch does. 00:11:42.780 --> 00:11:47.250 align:middle line:84% But also, all those things are in a stored pitch object. 00:11:47.250 --> 00:11:51.470 align:middle line:90% So a note has a pitch object. 00:11:51.470 --> 00:11:53.300 align:middle line:90% And so you can change that-- 00:11:53.300 --> 00:11:54.470 align:middle line:90% n.pitch.octave = 4. 00:11:54.470 --> 00:11:59.180 align:middle line:90% 00:11:59.180 --> 00:12:01.640 align:middle line:90% And see all that. 00:12:01.640 --> 00:12:05.240 align:middle line:90% But a note also has a duration. 00:12:05.240 --> 00:12:07.220 align:middle line:84% And so in this case, the default, 00:12:07.220 --> 00:12:11.310 align:middle line:84% all notes start off with a duration of one quarter note. 00:12:11.310 --> 00:12:13.380 align:middle line:84% I don't know why I'm privileging quarter notes, 00:12:13.380 --> 00:12:15.470 align:middle line:90% but somehow, I have. 00:12:15.470 --> 00:12:19.490 align:middle line:84% We can change the quarter length of that-- 00:12:19.490 --> 00:12:21.170 align:middle line:90% 3.5. 00:12:21.170 --> 00:12:24.840 align:middle line:84% And then, well, it has a fullName. 00:12:24.840 --> 00:12:26.420 align:middle line:90% So we can look at this-- 00:12:26.420 --> 00:12:29.370 align:middle line:84% 'B-flat in octave 4 Double Dotted Half Note'. 00:12:29.370 --> 00:12:32.150 align:middle line:90% OK, so that's all there. 00:12:32.150 --> 00:12:33.660 align:middle line:90% Hopefully this is working. 00:12:33.660 --> 00:12:35.420 align:middle line:84% One cool thing that you can do that you 00:12:35.420 --> 00:12:37.070 align:middle line:84% can't do with a pitch or duration, 00:12:37.070 --> 00:12:39.558 align:middle line:90% really, is, you can show a note. 00:12:39.558 --> 00:12:41.850 align:middle line:84% It's weird that the first time, it always takes longer. 00:12:41.850 --> 00:12:44.020 align:middle line:84% And then it's later, so here we go. 00:12:44.020 --> 00:12:46.090 align:middle line:90% We have a particular note. 00:12:46.090 --> 00:12:49.650 align:middle line:84% It figures out some kind of context for it. 00:12:49.650 --> 00:12:51.520 align:middle line:84% Has a couple other things we can do-- 00:12:51.520 --> 00:12:55.030 align:middle line:84% we can change the notehead to be an x. 00:12:55.030 --> 00:12:59.950 align:middle line:84% We can change the note to be no red. 00:12:59.950 --> 00:13:03.100 align:middle line:84% I'm slightly colorblind, so I can't really see the difference. 00:13:03.100 --> 00:13:08.040 align:middle line:84% But you can tell me if that works. 00:13:08.040 --> 00:13:08.790 align:middle line:90% Yep. 00:13:08.790 --> 00:13:15.550 align:middle line:84% And we can also make it into a complex note. 00:13:15.550 --> 00:13:19.140 align:middle line:84% So I think we learned 6.25 couldn't 00:13:19.140 --> 00:13:20.860 align:middle line:90% be represented normally. 00:13:20.860 --> 00:13:25.590 align:middle line:84% But we can see that music21 will figure out 00:13:25.590 --> 00:13:31.350 align:middle line:84% how many notes are necessary to represent it on the staff. 00:13:31.350 --> 00:13:34.770 align:middle line:84% There's other miscellaneous things. 00:13:34.770 --> 00:13:38.320 align:middle line:84% You can give it a lyric and so on. 00:13:38.320 --> 00:13:42.780 align:middle line:84% So again, everything there is in the-- 00:13:42.780 --> 00:13:44.070 align:middle line:90% during it. 00:13:44.070 --> 00:13:47.100 align:middle line:84% And you'll see there's a lot of stuff. 00:13:47.100 --> 00:13:50.070 align:middle line:84% And we're going to get through a good chunk 00:13:50.070 --> 00:13:52.680 align:middle line:90% of learning these things later. 00:13:52.680 --> 00:13:56.470 align:middle line:84% No, you will not be ever quizzed on, OK, 00:13:56.470 --> 00:13:59.490 align:middle line:84% what does purgeOrphans mean on a note? 00:13:59.490 --> 00:14:01.560 align:middle line:90% It's not that kind of class. 00:14:01.560 --> 00:14:05.100 align:middle line:90% But I want you to feel free-- 00:14:05.100 --> 00:14:06.460 align:middle line:90% play around with this. 00:14:06.460 --> 00:14:09.820 align:middle line:84% Play with anything except, just like with pitch, 00:14:09.820 --> 00:14:12.870 align:middle line:84% anything that begins with transpose 00:14:12.870 --> 00:14:17.730 align:middle line:84% is off limits, only because it'll 00:14:17.730 --> 00:14:22.170 align:middle line:84% make the problem set where we do a lot of things with intervals 00:14:22.170 --> 00:14:23.670 align:middle line:90% a lot less fun. 00:14:23.670 --> 00:14:25.740 align:middle line:90% Because you're not using it. 00:14:25.740 --> 00:14:32.180 align:middle line:84% Anyhow, this is the end of the unlocking for topic 1. 00:14:32.180 --> 00:14:38.000 align:middle line:90%