Springsteen, U2, Aretha, Stevie Wonder will play too
NME.COM has video from the opening night of the band's world tour
Bono and co hit Barcelona
Refers the deal to the UK's Competitions Commission
Band join Baaba Maal at Island Records gig
They also release double album of rarities<br />
It's 'effective but bonkers,' says man who recorded poem
Last stint on tour kicks off in September in Chicago<br />
They'll be held in major US cities starting next week
Bono and co will hit the US this autumn<br />