Released in 2012 on the album Night Visions, "Demons" serves as the lead single from Imagine Dragons' debut studio album. The track blends electronic production with rock instrumentation, establishing the band's signature sound that combines pop sensibilities with heavy guitar riffs. Written by the group members, the song addresses themes of personal struggle and overcoming internal obstacles, resonating with listeners seeking anthemic energy. It became a defining track of the early 2010s pop-rock revival, contributing significantly to the album's commercial success and cementing the band's status as a major force in modern rock music.