"Pet Sounds" and "Sgt. Pepper", with their lyrical unity, extended structure, complexity, eclecticism, experimentalism, and influences derived from classical music forms, are largely viewed as beginnings in the progressive rock genre and as turning points wherein rock, which previously had been considered dance music, became music that was made for listening to. Between "Pet Sounds" and "Sgt. Pepper", the Beach Boys released the single "Good Vibrations" (1966), dubbed a "pocket symphony" by Derek Taylor, the band's publicist. The song contained an eclectic array of exotic instruments and several disjunctive key and modal shifts. Scott Interrante of "Popmatters" wrote that its influence on progressive rock and the psychedelic movement "can't be overstated". Martin likened the song to the Beatles' "A Day in the Life" from "Sgt. Pepper", in that they showcase "the same reasons why much progressive rock is difficult to dance to".