Jonas Brothers tapped John Legend as their special guest in Los Angeles on Saturday night. The singer joined the band for a ...

Legend was the first special guest on the Jonas Brothers' stage at the Intuit Dome in Inglewood, Calif., the latest stop on ...

The Jonas Brothers pulled out all the stops in Los Angeles this weekend -- shocking fans by bringing out John Legend for an ...

This article originally appeared on Time. Ahead of his upcoming European tour for Darkness and Light which kicks off this fall, John Legend gave fans in London a surprise treat when he performed an ...