This is one of my favorite chamber pieces, titled "the Trout" or "die Forelle" in German. It's a piano quintet (violin, viola, cello, bass, and piano) by Franz Schubert. I got to play the first movement with some dear friends at Kinhaven Jr. Session in Vermont a few summers ago. It was so fun!

Bonus listening: 
This is not for the faint of heart. : ) My piano teacher in the October graphite drawing, Sam Yulsman, is also a wildly creative composer. Here is one of his pieces of music, scored for piano and electronics. Prepare for a tour of what experimental contemporary music can sound like! (And if you happen to be looking for a piano/music theory/composition teacher, check him out! Sam's bio)