Bono recently revealed that U2's newest album, "Songs of Innocence," that will be made available to half a billion iTunes subscribers was not released for free.

Despite the fact that the band released the album "for free" to iTunes, U2 was paid by the company. In a recent interview with TIME, Bono explained the turnout of events.

"We were paid. I don't believe in free music. Music is a sacrament," Bono said.

However, Bono preferred to not go into details on how much exactly they were paid for the release of their "Songs of Innocence" album.

Still, the album, which was released exclusively to Apple and could be downloaded by basically anyone who has access to iTunes, served as U2 first album in five years.

Apple CEO Tim Cook spoke at the conference for the new iPhone 6 and said, in reference to U2's standing ovation performance of "The Miracle," "Wasn't that the most incredible single you ever heard? We would love a whole album of that."

"The question is now, how do we get it to as many people as possible, because that's what our band is all about. I do believe you have over half a million subscribers to iTunes, so --- could you get this to them?" Bono said.

In an interview with Rolling Stone, Bono dished on their decision to release the album for "free."

"We wanted to make a very personal album. Let's try to figure out why we wanted to be in a band, the relationship around the band, our friendships, our lovers, our family. The whole album is first journeys - first journeys geographically, spiritually, sexually. And that's hard. But we went there," Bono explained.

U2 worked on the album for two years, alongside producer Danger Mouse. For them, the most joyous track off of the album has to be "California (There is No End to Love)."