Torn between Phil Collins (awesome!) and Nat King Cole (meh), Casey Abrams goes with his gut and takes on "Nature Boy." To be honest we would’ve preferred his rendition of "In the Air Tonight" a la The Hangover. We were creeped out by his leering and low growl. But apparently the judges didn’t mind the skeeve and embraced Casey’s originality.WATCH Casey Abrams perform "Have You Ever Seen the Rain" from last week’s episode.