I wanted to link to Donovan's great song "There is a Mountain" ("First there is a mountain, then there is no mountain, then there is...'). Sadly, I couldn't find any performance on YouTube of the studio recording, except one of those fan-made "slideshow" videos, and frankly, you're better than that.
So here is a live performance of the song with added bonus performer Bobbie Gentry in a fuzzy clip from a U.K. show of hers. Bobbie Gentry was very big here in the sixties thanks to her hit song "Ode to Billie Joe", but she dropped out of show business entirely sometime during the '70s.
According to the information on this video clip, it was "found and edited by a psychedelic yogi". Appropriate, I think.