Backed by a full orchestra, Haley Reinhart gets theatrical on “I (Who Have Nothing)” by Jerry Leiber and Mike Stoller. Although the judges slammed her first song, Haley battled on, taking mentor Lady Gaga’s advice to be a little pony. Standing ovations ensued. Jennifer Lopez said this is what Haley is capable of, pulling off one of the best performances of the year. In it to win it, Haley just had a moment, and all of Randy Jackson’s other standard phrases poured out. Classic Haley, said Steven Tyler. She just “Reinharted” herself into next week, promised the Aersomith frontman.