The sound of defiance: U2 at 40

"I don't mean to sound arrogant, but even at this stage,
I do feel that we are meant to be one of the great groups."
— Bono, as told to Rolling Stone, 1981
No one could have imagined the significance of that first gathering, held in a kitchen, over the north side of Dublin, on a Saturday… September 25, 1976, to be precise. Equipped with makeshift instruments and make-believe invincibility — admittedly with more ambition than ability — four teenage friends, known simply as Paul, Dave, Larry and Adam, formed a collective that would eventually be called U2.