"The reviews have been amazing. It also shows that the Apple experiment really worked for us because we've had a younger audience who know all these tunes and they've been listening to them a lot. That is a thrill for us." Irish rocker Bono is convinced U2's controversial release of album SONGS OF INNOCENCE was a success because it broadened their appeal. The band came under fire for teaming up with tech giant Apple to offer iTunes customers a free download of the disc last year (14).