Bruce Springsteen paid tribute to Eagles icon Glenn Frey at a recent concert in Chicago.

Bruce is currently on the River Tour 2016 with the E Street Band. Springsteen is performing The River, his classic 1980 release, from beginning to end at every show.

For his first encore, Bruce took the stage with just an acoustic guitar, at the United Center in Chicago, this past Tuesday.

Check out The Boss's acoustic version of one of the Eagle's biggest hits in a touching tribute to Glenn Frey.