The Deep were formed in Philadelphia, Pennsylvania , during the mid-1960s. They they're a little bit protopunk and and a little bit psychedelic. In fact, their biggest claim to fame is probably that the title of their sole album, The Psychedelic Moods of The Deep, is most likely the first time the word "psychedelic" was used in an album title.
The Psychedelic Moods album was recorded in August 1966 for the Cameo-Parkway label, which was also home to fellow protopunkers *? and the Mysterians. While the exact release date of the album has yet to be definitively established, the record most likely had been shipped to stores by late October 1966, based on the known release dates and catalogue numbers of other Cameo-Parkway albums. This would make it the first album to include the word "psychedelic" in its title, beating out the Blues Magoos' "Psychedelic Lollipop", released as early as November 1, 1966, and the 13th Floor Elevators "The Psychedelic Sounds of the 13th Floor Elevators", released around the last week of November 1966.
The Deep's Psychedelic Moods did not sell well, and the group did not tour to support it. They seem to have existed as a studio-only band, and, aside from sessions for their album, produced no other recordings under that name. Whatever the case, Rusty Evans left Cameo-Parkway to record a new album for Columbia Records in 1967. Ditching the name The Deep, this second album was credited to the band Freak Scene and entitled Psychedelic Psoul. The sound of this album is very similar to that of The Deep's album, and should be considered a follow-up in all but name.