The Monster Ball Tour is the second worldwide concert tour by American recording artist Lady Gaga in support of her second studio album, The Fame Monster. The tour was officially announced on October 15, 2009, after her joint concert tour with rapper Kanye West, titled Fame Kills, was suddenly canceled. Described by Gaga as "the first-ever 'pop electro opera'", The Monster Ball began four days after the release of The Fame Monster. Rapper Kid Cudi and singer Jason Derülo were confirmed as the supporting act for the first North American leg of the tour, while the band Alphabeat will support the UK stop of the tour. Virgin Mobile USA and Virgin Mobile Canada are the official sponsors of the American and Canadian legs of the tour, respectively. Gaga's production team, Haus of Gaga, designed the poster and the stage of the concert, including a giant contraption called "The Orbit".
Read more at http://en.wikipedia.org/wiki/The_Monster_Ball_Tour