High and low
Fast wiggles sound high, like a whistle. Slow wiggles sound low, like a big drum. We count the wiggles in one second. The count is called hertz, written Hz.
Lesson 03
Music is sound with a plan
Every sound is a wiggle. Music is wiggles put in order on purpose — high and low, loud and quiet, fast and slow.
Make a prediction
Frequency Keyboard
C4 is 262 Hz. What do you think the C one octave higher will be — about 300 Hz, or about 523 Hz?
Loud and quiet
A big wiggle shoves a lot of air, so it sounds loud. A small wiggle shoves only a little, so it sounds quiet.
Patterns make songs
A musician picks which notes to play, how long to hold each one, and when to get loud or soft. That plan is a song.
Hear it for yourself.
Everything you just learned happens inside BoomBrix, the speaker that snaps onto your builds.