It too easy forget they were a legitimate prog rock band, and they only real American prog rock band of note.
Leftoverture and
Point of Know Return are great prog rock albums. I've heard some stories at my local record shops about people who bought
Leftoverture. They bought the record because they assumed every single song was as catchy and pop friendly as 'Carry on My Wayward Son'. Record stores had a ton of customers try to return it because they were 'tricked' into buying a prog rock album.