U2 Set to Wrap Biggest Concert Tour Ever

Bono and Adam Clayton of U2 performing live

Saturday night (July 2), after taking their final bows at their Nashville show, U2 made an awfully special surprise encore. Frontman Bono spotted a blind fan holding a sign saying he wanted to play a song for his wife.

"Get a guitar for this dude. Gents, we have a surprise guest," Bono said as he helped the man up on stage and handed him a guitar.

"I'm really nervous," the man said, but as Bono broke into "All I Want Is You," the guitar came in seamlessly. Soon the rest of the band -- as well as the entire crowd -- joined in as well. Watch below.

There are ultimate fan moments, and there are moments like this: Because even if U2 isn't your cup of tea, something like this will certainly make you feel good.