Thank you so much for your suggestions! *oozes gratitude* I'm not sure which one to pick, but one of these will certainly do. I haven't listened to the K595 yet, though. I've never even heard the concerto. I was kinda hoping that Mozart would have something suitable, since it's funny by definition.
Out of interest, what will you do with it?
I'll portray a pianist who gets restless while waiting for their turn (starts reading a newpaper etc.).

I'm arranging a little performance that is a mix of music, poetry, drama and, hopefully, some fun.