John Legend will debut a new song, "If You're Out There," tonight (Aug. 25) as part of the opening of the Democractic National Convention at Denver's Pepsi Center.

John Legend will debut a new song, "If You're Out There," tonight (Aug. 25) as part of the opening of the Democractic National Convention at Denver's Pepsi Center.

According to a statement, the song is an "anthemic call-to-action and evocation of human potential." It includes such lines as "We're the generation / We can't afford to wait / The future started yesterday and we're already late."

"If You're Out There" was produced by Trevor Horn and Devo Springsteen, and features the Agape Choir. It will be available via the Web site my.barackobama.com/johnlegend after the performance but can be purchased now via iTunes.

The song will also be found on Legend's next album, "Evolver," due Oct. 28 via Columbia.