The song Believe It or Not [Theme from The Greatest American Hero] was sung by Joey Scarbury.
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The Greatest American Hero
Irving Taylor .
He sang his WWE Song BE MY BABY TONIGHT! HE NEVER SANG HIS THEME SONG! His TNA theme is sung by Dale Oliver.
No one. The MacGyver theme doesn't have lyrics.
Kelsey Grammer, (Frasier), sang it himself.Kelsey Grammer