Happy birthday to U2’s David “Edge” Evans, born August 8, 1961! Whether you love U2 or not, it’s easy to appreciate Evans’ deceptively simple-sounding guitar parts, which have influenced so many bands that came after U2. Here he is with Bono performing a stripped-down duo version of the stirring mega-hit “I Still Haven’t Found What I’m Looking For,” which originally appeared on U2’s 1987 album The Joshua Tree. This version is from a 2011 benefit concert at the Hollywood Bowl. — Blair Jackson