
In March 2017, Dan Reynolds told People that the song was inspired by his experiences with ankylosing spondylitis in 2015. A Halloween mix was released on October 31, 2022, a promo of the song appearing in the Octoepisode of The Late Show with Stephen Colbert. On January 8, 2019, another version of the song was released, featuring American rapper, Lil Wayne. As of November 2022, the song has amassed more than 2.2 billion streams on Spotify. It became the fifth best-selling song of 2017 in the United States and one of the best-selling singles of all time.
ROCK COVER OF IM A BELIEVER MOVIE
The song was played heavily in advertisements, notably for the Nintendo Switch Super Bowl LI advertisement, and several movie and television trailers.

The song received a notable boost in popularity after it was used in the season finale for the first season of the CW's Riverdale. It also reached the top ten in Austria, Canada, Czech Republic, France, Italy, Poland, Portugal, and Switzerland. "Believer" peaked at number four on the US Billboard Hot 100, becoming the band's third top ten single after " Radioactive" and " Demons".

It was written by Dan Reynolds, Wayne Sermon, Ben McKee, Daniel Platzman, Justin Tranter and its producers Mattman & Robin.

The song was released on February 1, 2017, through Interscope Records and Kidinakorner as the lead single from the band's third studio album, Evolve (2017). " Believer" is a song by American pop rock band Imagine Dragons.
