a new audience." A minority of those approached refused to allow their music to be used, including Bryan Adams, Guns N' Roses and Coldplay; however, in June 2010, Coldplay reversed their decision, allowing Glee the rights to their catalog. Adams posted on his Twitter account that the producers of Glee had never requested permission from him and urged them to "pick up the phone". Composer and musician Billy Joel offered many of his songs for use on the show, and other artists have offered use of their songs for free. A series of Glee soundtrack albums have been released through Columbia Records. Songs featured on the show are available for digital download through iTunes up to two weeks before new episodes air, and through other digital outlets and mobile carriers a week later. Glee music producers Adam Anders and Peer Astrom have begun to add original music to the show, including two original songs, "Loser like Me" and "Get It Right", on the March 15, 2011 episode. Glee is choreographed by Zach Woodlee and features four to eight production numbers per episode. Once Murphy selects a song, rights are cleared with its publishers by music supervisor P. J. Bloom, and music producers Adam Anders and Peer Astrom rearrange it for the Glee cast. Numbers are pre-recorded by the cast, while Woodlee constructs the accompanying dance moves, which are then taught to the cast and filmed. Studio recordings of tracks are then made. The process begins six to eight weeks before each episode is filmed, and can end as late as the day before filming begins. Each episode costs at least $3 million to produce, and can take up to ten days to film as a result of the elaborate choreography. In late 2010, Bloom reported the process has been even shorter; "as quick as a few weeks". For the second season, the creators were offered listens of upcoming songs in advance by publishers and record labels, with production occurring even before song rights are cleared. Promotion Prior to the second episode's premiere, Glee cast went on tour at several Hot Topic stores across the nation. The cast sang the U.S. national anthem at the third game of the 2009 World Series. Macy's invited them to perform at the 2009 Macy's Thanksgiving Day Parade, but host broadcaster NBC declined because Glee aired on a rival network. Murphy commented on the cast's