I recommend F.J McMahon (6386 monthly listeners). A fantastic folksinger who never gained any commercial success. His album The Spirit of the Golden Juice released in 1969 deserves so much more attention. This is two of my favorite tunes:
To the fans of psychedelic music, I recommend a psychedelic folk band from Turkey, "Gevende" with 8.884 listeners and a psychedelic rock band from Israel, "Boogie Balagan" with 420 listeners per month.