Offstage musicians and singers are performers who play instruments and/or sing backstage, out of sight of the audience, during a live popular music concert at which the main band is visible playing and singing onstage. The sound from the offstage musicians or singers is captured by a microphone or from the output of their instrument, and this signal is mixed in with the singing and playing of the onstage performers using an audio console and a sound reinforcement system. Offstage backup singers are also used in some Broadway musicals, as have offstage instrumentalists, in cases where an onstage actor needs to appear to play an instrument.

The Devils & Dust Tour was a 2005 concert tour featuring Bruce Springsteen performing alone on stage on a variety of instruments. It followed the release of his 2005 album Devils & Dust. The tour was named the Top Small Venue Tour of 2005 by the Billboard Touring Awards.