ab: I presume you're not joking, as I see they're based in St.St.?! Which one is he, then -- the singer with guitar & beard? (Or have I got them all mixed up already? It was a long day).
AB: When I open your link I not only get a concert; there's a box that says "Bring the Bullfrogs to Providence!". Hm. Perhaps I'll click on it and see if they appear...