Through the Looking Glass (Lost) series would conclude 48 episodes after "Through the Looking Glass", they felt comfortable playing flashforwards as early as the third-season finale. Post-production wrapped on May 21, 2007, only two days before it aired on television. The score was composed by series musician Michael Giacchino, while popular music was also featured throughout the episode. Charlie also sings a song in the episode that was written by Dominic Monaghan, who plays him. A "Lost" season finale is approximately twice as long the average "Lost" episode. Due to the episode's length, it was split into two parts in some countries and when released
Charlie Green (musician) Charlie Green (musician) Charlie Green (1893 – November 27, 1935) was an American jazz musician, who was born in Omaha, Nebraska, and died in New York City. He was one of the early jazz trombonists and the soloist in the Fletcher Henderson orchestra (joining slightly before Louis Armstrong). He played locally in Omaha between 1920 and 1923, before his two stints with Henderson (July 1924 and April 1926; and late 1928 to early 1929). Described as "A superior blues player who could also swing fairly early", Green played on several Bessie Smith recordings, notably "Trombone Cholly" featuring his trombone, along