“Apostrophe'” is the 7th track on Frank Zappa’s 1974 album Apostrophe(‘). This song is an instrumental jam featuring Cream bassist Jack Bruce and session drummer Jim Gordon.

In a 1977 interview with Guitar Player Magazine, Zappa commented on his experience with Jack Bruce’s bass playing during the “Apostrophe'” jam session:

Q: What about playing with (bass guitarist) Jack Bruce on Apostrophe?

Zappa: Well, that was just a jam thing that happened because he was a friend of (drummer) Jim Gordon. I found it very difficult to play with him; he’s too busy. He doesn’t really want to play the bass in terms of root functions; I think he has other things on his mind. But that’s the way jam sessions go.