This one is the most cheesy series of jokes ever:
Q: Why did Clara cross the road?
A: To see Brahms *narrows eyes
Q: How come Clara despised Robert?
A: Cause he always had his eye on her...

Q: How come Schumann's Fantasie has no dedicatee?
A: Cause Clara forgot to replace "Fr. Liszt" with "Cl. Wieck".

Q: How come Clara hated Liszt?
A: Cause he saw her liszt of clients... *facepalm