Once upon a time, practical considerations were important to me.
When I was with the Classic Stage Company in New York I wrote incidental music and/or songs for Miss Julie, The Tempest, Twelfth Night, The Servant, Woyzeck, Edward III, Rosencrantz and Guildenstern Are Dead, and a staging of Moby Dick. Very specific assignments.
Later, I wrote jazz tunes for my band and a jazz orchestra assembled from the now defunct All About Jazz forum. Those were equally specific, for the instrumentation available.
I've written piano music for the silent movies that I accompany from time to time.
However, lately I've been studying orchestration and writing some new things as well as arranging some old pieces. Thoroughly impractical, as there's not much chance for any of them to be performed.
Cheers,
Jer