Who haven’t heard of U2? One of the most successful rock bands in the world, and its lead singer Bono, who is not only a great singer, but also a human rights activist. U2 is known because of its not only music, but also Bono's activism has made the group deeply involved in human rights. The band has produced 14 studio albums, and many concerts, cooperations and soundtracks since it started its way in 1976. Among their famous albums, you can find: Zooropa (1993), Pop (1997), No Line in the Horizon (2009), and the newest album: Songs of Innocence (2014). U2 are responsible for some of the top hits, the most known in "One", that was selected no. 36 in "the 500 greatest songs of all times". Would you like to see Bono, the Edge, Adam Clayton and Larry Mullen Jr. live? Buy U2 tickets online at Doctorticket!