intervals tool

Trying to make an intervals tool for chords scales, to be used away from the fretboard & keyboard.

Right now it's just HTML, the Salamander piano samples library, CSS, and Javascript. 

I'm going to add (or more accurately ChatGPT is going to add) some logic to the buttons to play certain intervals based on whether your moving up or down the chord scale; meaning, somehow the logic will have to determine whether you're moving down from 6 to 5 or moving up from 6 to 7, moving up from 4 to 5 or down from 5 to 4, etc. -- and then apply the correct intervals above the bass motion before triggering the correct audio samples -- yikes!