Herbert Jeffrey "Herbie" Hancock (born April 12, 1940) is an American pianist, keyboardist, bandleader and composer. Starting his career with Donald Byrd, he shortly thereafter joined the Miles Davis Quintet where Hancock helped to redefine the role of a jazz rhythm section and was one of the primary architects of the "post-bop" sound. He was one of the first jazz musicians to embrace synthesizers and funk music (characterized by syncopated drum beats).
Roger McGuinn's sparkling, chordal 12-string Rickenbacker riffs on the Byrds' early hits were the sonic bridge between folk and rock–and an irreplaceable color in rock's palette: Every indie band who's more interested in beatific strumming than screaming solos owes him a debt (the striking break in "Bells of Rhymney" could be on a Smiths record). McGuinn could do a lot more than chime, however, as demonstrated by his still-astonishing psychedelic-raga-Coltrane licks on "Eight Miles High."