[The only psychedelic song they recorded](https://www.youtube.com/watch?v=AULOC--qUOI) vs [This](https://www.youtube.com/watch?v=C1e9p6J89rQ) Edit to add: There are two faces you should recognize. The first is very easy, and the second is harder to place. A hint, the second face had a successful second career as a reoccurring bit actor in a several TV shows and movies.