очень много достойных групп
The Byrds, Grateful Dead, The Great Society, Jefferson Airplane, The Doors, Quicksilver Messenger Service, Buffalo Springfield, Iron Butterfly, The Jimi Hendrix Experience, The Velvet Underground, Vanilla Fudge, Love, Country Joe & The Fish, Frank Zappa & Mothers of Invention, Captain Beefheart & His Magic Band, The Seeds, Blues Magoos, 13th Floor Elevators, The Electric Prunes, Yardbirds, Donovan, Cream, Traffic, The Beatles, Crazy World of Arthur Brown, Pink Floyd, Syd Barrett, Tomorrow, The Moody Blues, Eric Burdon & The Animals, The Hollies и т.д.