WEBVTT

00:00:04.880 --> 00:00:07.250
This is the song writing lesson.

00:00:07.340 --> 00:00:09.643
Music isa lot like a computer program.

00:00:10.260 --> 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.

00:00:27.940 --> 00:00:34.260
When you read song lyrics, and it says the word "chorus", 
do you sing the word chorus?

00:00:34.620 --> 00:00:39.540
No, you look at the top of the page 
to see what words make up the chorus.

00:00:39.680 --> 00:00:45.300
In this lesson, you'll learn a silly little song 
called Little Bunny Foo Foo.

00:00:45.710 --> 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.

00:00:55.990 --> 00:00:58.475
It makes programming easier 
and more efficient,

00:00:58.620 --> 00:01:02.520
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!