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 "U2 360° Tour"): The concerts featured the band playing "in the round" on a circular stage, allowing the audience to surround them on all sides.
Relevant evidence: No