 In the Beach Boys' case, the doo-wop influence is evident in their early hit "Surfer Girl", and in albums recorded during their psychedelic era, in which the group experimented and innovated with the human voice as an instrument in a self-described effort to "expand modern vocal harmony".In 1984, Billy Joel released For The Longest Time which is an unabashed tribute to Doo-wop.Although the ultimate longevity of doo-wop has been disputed., at various times in the 1970s–1990s the genre saw revivals, with artists being concentrated in urban areas, mainly in New York City, Chicago, Philadelphia, Newark, and Los Angeles.