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Ah yes, I think you're right that it's Beethoven's

Yes. You would be correct! Congratulations! I'm giving you the win, as it was SPECIFICALLY Beethoven's piano key I was after. And @amos gets the upvote for being first to guess piano key.

Yay! Haha these are really fun!

Try and solve my next riddle. Winner gets SBD.

Riddle me This!

Here's Guess What I Am #4! Good luck!
guesswhatiam