Check out this video of a dog playing the piano.
I once witnessed a dog who really appreciates good music.
The musician was a busker (street performer) playing his guitar. As the dog didn't have any money to offer the busker, he found a stick and gave it to the man and then sat in front of the guy as he sang. The dog even sang along with the busker but the busker wasn't impressed. It was the funniest thing I'd ever seen. I even noted down the experience on my blog. See Nothing But a Hound Dog
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See also Snowball, the dancing cockatoo