Black Pearl was an American rock and roll band, formed in San Francisco, California, which was active from 1967 to 1978.
As noted by one reviewer, "Black Pearl crank out some hard rockin' psych-rock music with the most ferocious drumbeats you've heard in a while.
"[1] The band's three guitar lineup was considered powerful, being a format also found in contemporaries Moby Grape and Buffalo Springfield.
Morris, O'Connor and Mulcahy continued as Black Pearl, playing initially as a power trio.
When the Barbarians drummer, Moulty, refused to travel to Boulder, Colorado, for a two-week engagement, new drummer, Oak O'Connor, plus Mulcahy and Fieldings, joined with ex-Barbarians Morris, Causi, and Benson, all initially based in Boston, to form Black Pearl in 1967.