Not only for midi, Larry.
TMO it is too handy in practical use to make for instance a own rhythm/style.
In this case one could use multitracking in an effective way. As an example.
Suppose you want to have a nice accomp1-rhytm with a guitar.
You could work as follows (eg. all in 2 measures).
Track 1: record a simple lead-melody
Track 2: add some notes
Track 3: add another single note
Track 4: just another single note.
If all is OK than merge all together and copy the 2-measured sequence to the composer to finish.
The benefits in this way are that, in case of working in one track one can easier delete, change the single notes in track x etc. etc.
Especially for drumtracks it could be a effective way to compose. (unless one uses specific software)
Cees