I think I saw them in the late 70's at Wembley Empire Pool, as it was.
I will always remember them playing Rudy, and it was synced-up to a sped-up film of a steam train going from London to Edinburgh or Glasgow, -can't remember, and the music ended as it pulled into the station. I don't think I'd ever seen something like that before.
Im sure it, rather than the song, got a huge round of applause.
Great concert.