Nancarrow

Don't want to say too much about Conlon Nancarrow, but he was known for his compositions for player pianos. They were ahead of their time (early/mid-20th century), because rhythmically the player piano allowed pretty much anything.

Here's a trilogy for player piano:

A - measure=72

B - measure=50

C - measure=92

For violin and player piano:

Toccata, for Violin and Player Piano

And a special arrangement of one of his early player piano "studies"  by Yvar Mikhashoff:

Study No.7 (Arr. Yvar Mikhashoff)