September 9th marks the six-year anniversary of one of strangest moments in U2's career - when they made everyone mad by giving away their album for free.
You might remember this - in 2014, U2 appeared at an Apple product launch event to announce that their new album,Songs of Innocence, was not only out - it had already been downloaded into Apple users' iTunes libraries.
Surprisingly, U2 ended up facing a major backlash for the stunt - turns out a lot of people didn't like Apple messing with their iTunes accounts, free album or not.