The tour that Lungs Tour supported U2 in was a worldwide tour that had a round stage and had a song that had never before been performed live.
 U2 did not play the song live until 2 July 2009, when they performed it on the second concert of their U2 360 Tour in Barcelona. 
The U2 360 Tour was a worldwide concert tour by rock band U2. 
 The concerts featured the band playing "in the round" on a circular stage, allowing the audience to surround them on all sides. 
 They also supported U2 on their U2 360 Tour in 2011. 
