The Peanut Butter Conspiracy was an American psychedelic pop band formed in Los Angeles in 1966. Known for their dreamy, harmony-rich sound, they are often considered a significant part of the West Coast psychedelic scene of the mid to late 1960s. The band featured vocalist Barbara Robison, whose distinctive voice added a unique element to their music. Their most notable work, "The Great Conspiracy," released in 1967, showcases their signature blend of psych-pop and folk-rock influences. Despite their relatively brief existence, The Peanut Butter Conspiracy contributed to the sonic landscape of their era.