I work in the music industry (well I work at a company that works in the music industry, I'm just in their IT department) and at one time represented Paul Anka who wrote songs and performed with Frank Sinatra (among others). My brother was his agent - we both work here - and I recall him telling me that Paul had a great many stories about the rat pack and the mafia. I'll have to ask him if he remembers any of the stories.

Sorry OP, don't mean to hijack your thread, it just reminded me of the Paul Anka thing.