who wrote the theme song for the greatest american hero
Believe It or Not (song) "Believe It or Not" is a song composed by Mike Post (music) and Stephen Geyer (lyrics) and sung by American singer Joey Scarbury. It serves as the theme song for the television series The Greatest American Hero. The track was later included on Scarbury's 1981 debut album America's Greatest Hero.
The Greatest Showman Benj Pasek and Justin Paul wrote all the songs appearing in the film.[23]