"The Electric Prunes- Mass in F Minor -1968 US":

"Mass in F Minor" is the third studio album by The Electric Prunes, released in 1968. This project was composer David Axelrod's idea, The Electric Prunes performing a Catholic mass set to psychedelic guitar.
At the time of its release it was seen as innovative and adventurous, and it was subject to further interest in 1969 when the song "Kyrie Eleison" appeared in the movie Easy Rider.

-by dj fanis: here