1992 conducted by Don Menn and Matt Groening. http://www.angelfire.com/in/eimaj/interviews/frank.zappa.html
Zappa:Yeah. Bad boy in Arkansas. Well, how about Harry Partch?
Groening: His music is still being played.
Zappa:All his instruments went to this foundation which is located in Escondido, and they maintain all this stuff and give performances of his music.
Groening: What do you think of Harry Partch?
Zappa:I like the sound of the instruments, and I like parts of the compositions, but I think that the stuff goes on and on and on and on and on too long. There's too many repetitions. But the idea of it appeals to me a lot. But it's so personalized. He went all the way. He built his own instruments, developed his own tuning system, developed his own compositional machinery, and just went out there and did it, and he was a pretty good hobo at the same time. That's essentially an American composer kind of a thing to do.http://www.bizarremag.com/film-and-music/music/2783/harry_partch.html
In turn, this maverick attitude won him a handful of celebrity fans, including Tom Waits, whose Swordfishbones is heavily influenced by Partch's techniques, and Frank Zappa, who spent many hours with the composer, mesmerised by his live performances.