Here is my most recent Impromptu in A, a somewhat multi-faceted piece in terms of emotion. It's relatively shorter than my other pieces, it's only about a minute long. I think it works best around 100-140 to the quarter note.

SCORE: http://www.scribd.com/doc/235422281/Impromptu-in-A
SOUNDTRACK: https://soundcloud.com/ritzy-cat/impromptu-in-a