Question: What 2-year worldwide tour had a round stage and a band that performed a song never before performed live?

"Electrical Storm" is a song by Irish rock band U2.  It was released as a single from their second compilation album, "The Best of 1990–2000", and was one of the two new songs recorded for that album (the other one being "The Hands That Built America").  The music video for the song prominently features drummer Larry Mullen Jr., as well as actress Samantha Morton.  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.  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. <SEP> Rock and Roll Over Tour is a concert tour by the American hard rock group Kiss.  It began November 24, 1976 (shortly after the release of the Rock and Roll Over album) and ended April 4, 1977.  It was on this tour where the band performed for the first time at Madison Square Garden on 2/18/77 - a venue all four members of the band had long dreamed of playing (February 18, 1977).  The band also performed in Japan for the first time on this tour.  They played Budokan Hall four nights in a row breaking the previous concert attendance record set by The Beatles.  On December 12, 1976 Ace Frehley suffered a severe electrical shock on stage which delayed the concert.  The delay lasted about fifteen minutes and then resumed; Ace was able to finish the show despite having lost feeling in one of his hands.  Being inspired by the event, Ace wrote the song "Shock Me" which appeared on Kiss' next album release Love Gun (1977).  It is the first Kiss song in which Ace sings lead vocals.  This was the first tour on which "Beth" was performed live; instead of being played by the entire band, it was sung solo by drummer Peter Criss to a recording of the instrumental track from the Destroyer album. <SEP> "Firm Biz" is the first single by the Hip hop supergroup The Firm from their singular collaborative LP "The Album".  The song was produced by L.E.S, who based the song's track on a sample of Teena Marie's 1981 hit "Square Biz".  "Firm Biz" also features a chorus performed by former En Vogue singer Dawn Robinson, reworked from the "Square Biz" chorus.  AZ raps the first verse of the song, Nas the second, and Foxy Brown the third and final verse.  The song never reached any US chart positions, but was a UK Top 20 hit in 1997.  A remix of the song was released, featuring a verse from Half-A-Mill and a chorus by Mary J. Blige.  The word "feds" is censored in the explicit version, in verse 2, performed by Nas, when he says "Never that though Black .4-4's for feds". <SEP>  Launched in support of the group's 2009 album "No Line on the Horizon", the tour visited stadiums from 2009 through 2011.  The concerts featured the band playing "in the round" on a circular stage, allowing the audience to surround them on all sides.  To accommodate the stage configuration, a large four-legged structure nicknamed "The Claw" was built above the stage, with the sound system and a cylindrical, expanding video screen on top of it.  At 164 ft tall, it was the largest stage ever constructed. The U2 360° Tour was a worldwide concert tour by rock band U2.  U2 claimed that the tour would be "the first time a band has toured in stadiums with such a unique and original structure."