William Frederick Gibbons is an American rock musician who is the guitarist and primary vocalist of ZZ Top. He began his career in the Moving Sidewalks, who recorded Flash (1968) and opened four dates for the Jimi Hendrix Experience. Gibbons formed ZZ Top in late 1969 and released ZZ Top's First Album in early 1971. Gibbons possesses a gravelly bass-baritone singing voice and is known for his bluesy, groove based guitar style. He is also noted, along with ZZ Top bassist Dusty Hill, for his chest-length beard. Gibbons has made appearances with other artists and acted on television shows, most notably Bones. In 2001, Rolling Stone named him the 32nd greatest guitarist of all time.

Beethovens String Quartets are the undisputed sine qua non of the string quartet genre, with all other works in this form, as well as the ensembles themselves who must inevitably perform and record them, measured against this body of work and its associated recordings. The Philharmonia Quartet of Berlin, four members of the BPO, has been termed a ""top-flight-ensemble"" by the Chicago Tribune, possessing a heart melting sound (Boston Globe). An ensemble of thirty years standing, the PQB has established itself as a highly regarded, standard-setting body, and one in great demand worldwide.