London, July 2 U2 paid tribute to Michael Jackson as they began their first tour in three years in Barcelona.

Bono, Edge, Adam Clayton and Larry Mullen, who will be performing at 15 stadiums across Europe, dedicated Angel Of Harlem, originally penned about Billie Holiday, to the late King of Pop.

"We met Michael Jackson many times over the years and he was an unspeakable talent," British tabloid The Sun quoted Bono as saying. The singer, at the end of the song, also quoted from the Jackson hits Man In The Mirror and Don't Stop 'Til You Get Enough in front 90,000 fans at Camp Nou. The rockers will take their "360° Tour" across the continent, covering France, Germany, Ireland, the Netherlands and more over the next two months. (ANI)