Somali-Canadian artist K'naan performed an inspiring set at the "Decade of Difference" concert at the Hollywood Bowl on Oct. 15. In one of many unannounced surprises at the concert, U2 frontman Bono joined K'naan on stage at the end of K'naan's first song, "Bulletproof Pride."
[ Photos: K'naan at the Clinton concert ]
K'naan also moved the crowd with his hit single "Wavin' Flag" off the "Troubadour" album, which became the unofficial anthem of the 2010 World Cup in South Africa. But the most memorable part of his appearance was his speech on growing up in Somalia and how President Clinton's efforts there made a difference in his young life.
"Bulletproof Pride" (Special guest Bono) (starts at 1:32)
"America" (starts at 6:50)
"Wavin' Flag" (starts at 14:28)