This is essentiually breaking a longer note into shorter notes. This is really simple in a DAW's piano roll. But still not too hard with western traditional notation. There a few different ways depending on what your needs / desires are.
- Cut the long note into shorter repeated notes
- Move the little notes up or down, leave some in place, and in some cases remove some to make rests or syncopations.
- Some common patterns depending on what note follows this original note - but in all cases the first note of the diminution is the same pitch as the original note.
- If next note is a step above
and we are breaking the original note into 4 there are two common patterns:
- start note - upper neighbor - lower neighbor - and start note again
- start note - a note a third below - then go up the scale
- start note - upper neighbor - lower neighbor - and start note again
- If next note is a step below
and we are breaking the original note into 4 there are two common patterns:
- start note - lower neighbor - upper neighbor - and start note again
- start note - a note a third above - then go down the scale
- start note - lower neighbor - upper neighbor - and start note again
- If next note is the same
and we are breaking the original note into 4 there are two common patterns:
- start note - lower neighbor - the go up the scale
- start note - upper neighbor - then go down the scale
- start note - lower neighbor - the go up the scale
- If next note is a step above