Ruben Studdard, Dolvett Quince and David Foster

What better way for a singer to celebrate his weight loss than by collaborating on a tune with a world-renowned composer?

After being eliminated and then reinstated at the end of last week's Biggest LoserAmerican Idol winner Ruben Studdardis back to continue his journey on the ranch. His trainer Dolvett takes him to meet David Foster, where the two work on a song that Foster wrote for Studdard to express his battle the best way he knows how — through singing.

Watch:

The Biggest Loser airs on Tuesdays at 8/7c on NBC. Studdard's single from the episode, "Meant to Be," is out on Tuesday as well.