Artists like The United States of America

Ultimate Spinach was a short-lived American psychedelic rock band from Boston, Massachusetts which was formed in 1967. In terms of style and national recognition, the band was one of the most prominent musical acts to emerge from the "Bosstown Sound", which was a marketing campaign posing as a regional attempt to compete with the San Francisco Sound. During the group's existence, they released three albums, with their self-titled debut the most commercially successful.

The West Coast Pop Art Experimental Band (WCPAEB) was an American psychedelic rock band formed in Los Angeles, California, in 1965.

Don Van Vliet, known by his stage name Captain Beefheart, was an American singer, songwriter, multi-instrumentalist, and visual artist. Conducting a rotating ensemble known as the Magic Band, he recorded 13 studio albums between 1967 and 1982. His music blended elements of blues, free jazz, rock, and avant-garde composition with idiosyncratic rhythms, absurdist wordplay, and Vliet's gravelly singing voice with a wide vocal range.

Spirit was an American rock band founded in 1967 and based in Los Angeles. Their most commercially successful single in the United States was "I Got a Line on You". They were also known for their albums, including their self-titled debut album, The Family That Plays Together, Clear, and Twelve Dreams of Dr. Sardonicus.

Timothy Charles Buckley III was an American musician. He began his career based in folk rock, but subsequently experimented with genres such as psychedelia, jazz, the avant-garde, and funk.

Big Brother and the Holding Company are an American rock band that was formed in San Francisco in 1965 as part of the same psychedelic music scene that produced the Grateful Dead, Quicksilver Messenger Service, and Jefferson Airplane. After some initial personnel changes, the band became well known with the lineup of vocalist Janis Joplin, guitarists Sam Andrew and James Gurley, bassist Peter Albin, and drummer Dave Getz. Their second album Cheap Thrills, released in 1968, is considered one of the masterpieces of the psychedelic sound of San Francisco; it reached number one on the Billboard charts, and was ranked number 338 in Rolling Stone's the 500 greatest albums of all time. The album is also listed in the book 1001 Albums You Must Hear Before You Die.