In 2009, U2 released “No Line On The Horizon” and it became one of the biggest albums of the band’s career. Fans waited for five years for the follow up and when it came, it caught everybody off guard. The English rock band partnered with Apple and “Songs of Innocence” was released for free to coincide with the release of the iPhone 6 and the iPhone 6 Plus. However, not all iTune users were happy to see the free album pop up in their library. Apple was force to release instructions on how to delete the album.