JB or MB.......would be interested to know which musical?
MB, although it is from a friend of a friend, so I shouldn't judge. He seems an ok bloke...warm, funny and friendly enough.I can't really say too much about the musical as it could give the 'friend's friend' away (they're pretty well known in their own right)...recent will probably be a big enough clue, though.
As for JB, I've heard he's absolutely lovely and very supportive of new performers....just a bit exhausting with his exuberant (and exhibitionist!) personality. Seen him live and loved him, though.