Прогрессивный фолк.
The only album released during the existence of The Trees Community is The Christ Tree, which was released in 1975.

As far as influences go, here are some of them: The Incredible String Band, Moody Blues, Indian Raga and Balinese Monkey Chant, traditional American sacred folk music, Terry Riley, Steve Reich, Charles Ives, Bela Bartok and Claude Debussy.