We've seen some pretty inventive auditions on "American Idol" -- but this guy singing the theme song for "Family Matters" may actually be one of the most original.

One male contestant blows the judges away with his very impressive version of "As Days Go By" during the Pittsburgh auditions of the show's two night premiere.

The singer also performs "If I Only Had a Brain" from "Wizard of Oz" -- and it's clear Steven Tyler is a fan of the guy's vocal stylings.

Another wannabe tried singing the 90's theme song last year ... but with slightly different results:

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