Fans at a recent Guns N’ Roses concert got an unexpected moment when Chris Stapleton walked onto the stage to perform Knockin’ on Heaven’s Door with the band. The appearance came during the show’s encore, adding a country music voice to one of the group’s most recognizable live songs. The collaboration was announced in the moment as Stapleton joined Axl Rose, Slash, and the rest of the band for the performance. The song has been part of Guns N’ Roses’ concerts for decades after the group recorded its own version of Bob Dylan’s classic in the early 1990s. The moment gave fans a rare live pairing that celebrated a song with a long history across multiple genres.