It is the opening track from The Greatest Showman: Original Motion Picture Soundtrack (2017).
Despite not being released as an official single, "The Greatest Show" was the 18th biggest song of 2018 in the United Kingdom.
For The Greatest Showman: Reimagined (2018), the song was covered by American rock band Panic!
Rolling Stone's Ryan Reed wrote that the Panic!
at the Disco's version "[...] stays faithful to the original's theatrical arrangement of brass fanfare and densely layered harmony vocals", and "beefs up the rhythm section with a booming drum sound and ends the track with a Queen-styled guitar solo.