Okay kiddo, have you heard of a piano? It has 88 keys and when you press them, they make different sounds. These sounds are called notes. The notes go from low to high and sound different from each other.
But did you know that there are different scales (like a musical ladder) that you can use to make music? One of these scales is called the Bohlen-Pierce scale (named after the people who discovered it).
The Bohlen-Pierce scale is a musical scale that has 13 notes instead of the usual 12 notes you find on a regular piano. These notes are different from each other and don't sound like the ones you're used to hearing.
The reason for this is because the Bohlen-Pierce scale uses math to make the notes. It takes the number three and multiplies it by itself a bunch of times to get all the different notes.
This scale is used in some modern music, but is not as common as the regular scales you hear. It's pretty cool to think that math can be used to make music!