The Osborne Brothers, Sonny Osborne (b. October 29, 1937) and Bobby Osborne (b. December 7, 1931), were an influential and popular bluegrass act during the 1960s and 1970s. They are probably best known for their No. 33 1967 country hit song, "Rocky Top", written by Felice and Boudleaux Bryant and named after a fictional Tennessee location.