'Glee' song previews: 'Hold on to Sixteen'
Sam gets his groove back with a "Glee" original, while the Troubletones masterfully mash up "Survivor" and "I Will Survive." New Directions covers "We Are Young," and everyone gets their Jackson family on with "Control," "ABC" and "Man in the Mirror."
Watch Sam's triumphant return on a country-fied version of "Red Solo Cup," along with the Troubletones' Sectionals performance, below. You can also listen to the rest of the tracks from "Hold on to Sixteen."