Double concerto for violin, cello, and piano, Beethoven's Triple Concerto for Violin, Cello, Piano and Orchestra being perhaps the most notable, but there have been many; see the list of triple concertos for violin, cello, and piano. A notable quadruple concerto is Olivier Messiaen's incomplete "Concert à quatre". Double concerto A double concerto (Italian: "Doppio concerto"; German: "Doppelkonzert") refers to two distinct variations on the concerto. Most often, it refers to a concerto featuring two performers, as opposed to the usual single performer, in the solo role. These two performers' instruments may be of the same type, as in Bach's, Concerto for
Owned-and-operated television stations in the United States as a result). However, Tribune was the only one of the two companies involved in The WB that owned any stations aligned with the network as Time Warner did not own any television stations at the network's launch and would not own one until its 1996 merger with the Turner Broadcasting System, owners of Atlanta superstation WTBS (channel 17, now WPCH-TV; its national feed, TBS, is now a separate basic cable channel). On January 24, 2006, Time Warner and CBS Corporation announced that they would merge The WB with the CBS-owned United Paramount Network to form a new broadcast network