ABC MIDI Short/Long Note Program Injector
Injects a configurable short-note MIDI program and a configurable long-note MIDI program
based on note length and short-note run length.
How it works: A note is considered short when its actual duration equals the configured short-note length.
Any note longer than that is treated as long. Short runs only switch to the short-note program once they reach the configured
number of consecutive short notes. Until then, they stay under the current long-note phrase.