Question: "Electrical Storm" is a song by Irish rock band U2, they performed it on the second concert of which worldwide concert tour by rock band U2, launched in support of the group's 2009 album "No Line on the Horizon"?
Sentence (from "Electrical Storm (song)"): The song was written by Bono and is about two lovers who are fighting and the tension between them; it relates this to a looming electrical storm.
Relevant evidence: No