IIRC this was the first group to appear on a new comedy show called Laugh-In in 1969 and it was a "video" (a film) which was very cutting edge. It was one of very few that appeared on the program before they stopped having musical guests.
Huh? Don't I already have Benefit?... Checking my spreadsheet...I do, so what did I miss? Oh wait....it's the 50th Ann. Edition Apparently I must have this Ordered...thanks for the heads up