CUPERTINO, CA - SEPTEMBER 09: Apple CEO Tim Cook (L) greets the crowd with U2 singer Bono (R) as The Edge looks on during an
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After announcements about the iPhone 6 and Apple Watch at today's Apple Keynote, U2 took the stage with Apple CEO Tim Cook and surprised the world by releasing the band's new album Songs of Innocence to everyone with iTunes. For free. The album's 11 tracks, boasting production from Danger Mouse and David Guetta, would be added automatically to every person's iTunes account, whether that person had requested it or not. That's more than 500 million free albums.

Despite the seemingly sweet deal, some music fans weren't particularly thrilled with Apple throwing new U2 music in their iTunes. Here are some of the best responses from Twitter.