Turn on a number of ports specified in the array based on a number of musical notes (also specified in an array).
Can be used in many use-cases, for example turning on LEDs synched with music.
Only works with whole, quarter, half and eight notes so far, no triples.
Set the notes array and the tempo variable.
The program is written using the PlatformIO framework. If you would like to extract the Arduino code as a standalone, you can find this at /src/main.cpp.