Backstage, after the show. Shouting, as usual. We're trying to figure out who played the clam in the song "Monkey". We had spent an hour earlier that day rehearsing a little two-second bit of the song, and when we got to the show almost no one actually managed to pull it off. (For the record, Jim played it exactly right.)Charlie (I'm the blur on the left). Tom (our tour manager) is in the middle…