WEBVTT 00:00:04.880 --> 00:00:07.720 This is the song writing lesson. The written 00:00:08.060 --> 00:00:10.060 Music is a lot like a computer program. 00:00:10.780 --> 00:00:14.520 The written notes and words tell the singer exactly what to do. 00:00:14.760 --> 00:00:19.720 Some parts of music are used over and over again. We call this the chorus. 00:00:21.040 --> 00:00:27.000 In a computer program, the parts of the program used over and over again are called functions. 00:00:28.360 --> 00:00:34.120 When you read song lyrics, and it says the word "chorus", do you sing the word chorus? 00:00:34.620 --> 00:00:39.320 No, you look at the top of the page to see what words make up the chorus. 00:00:39.960 --> 00:00:45.300 In this lesson, you'll learn a silly little song called Little Bunny Foo Foo. 00:00:46.400 --> 00:00:50.480 The song has a chorus that you will sing several times over and over again. 00:00:51.440 --> 00:00:55.580 A function is a piece of code that you can call and use over and over again. 00:00:56.240 --> 00:00:58.475 It makes programming easier and more efficient, 00:00:58.920 --> 00:01:02.060 so you don't have to write out the steps of your function over and over again. 00:01:02.540 --> 00:01:05.360 You can just write it once!