Swift toured throughout 2011 and early 2012 in support of Speak Now. As part of the thirteen-month, 111-date world tour, Swift played seven shows in Asia, twelve shows in Europe, 80 shows in North America and twelve shows in Australasia.^[137] Swift invited many musicians to join her for one-off duets during the North American tour. Appearances were made by James Taylor, Jason Mraz, Shawn Colvin, Johnny Rzeznik, Andy Grammer, Tal Bachman, Justin Bieber, Selena Gomez, Nicki Minaj, Nelly, B.o.B, Usher, Flo Rida, T.I., Jon Foreman, Jim Adkins, Hayley Williams, Hot Chelle Rae,Ronnie Dunn, Darius Rucker, Tim McGraw and Kenny Chesney.^[138][139] During the North American tour leg, Swift wrote different song lyrics on her left arm for each performance and has said that the lyrics should be viewed as a nightly "mood ring."^[140][141] Swift performed many acoustic cover versionsduring her North American tour. In each city, she paid tribute to a homegrown artist.^[142] She has said the cover versions allowed her to be "spontaneous" in an otherwise well-rehearsed show.^[143] The tour was attended by over 1.6 million fans and grossed over $123 million.^[137] Swift's first live album, Speak Now World Tour: Live, featuring all seventeen performances from the North American leg of the tour, was released in November 2011.^[144]