What should I ask Bob Spitz?

Yes I will be doing a Conversation with him, Wikipedia here.  I very much enjoyed his new book on the Rolling Stones, plus he has many older books of note, including on the 1969-1970 Knicks, Woodstock, Ronald Reagan, Bob Dylan, the Beatles, Led Zeppelin, and Julia Child.  All good books!  He also for a while worked as manager to both Bruce Springsteen and Elton John.

So what should I ask him?