The Brit is back on Tuesday's Glee! While Adele's songs have been covered on the show before, The Troubletones' performance may very well be the best yet. Santana, (Naya Rivera), Mercedes (Amber Riley), Brittany (Heather Morris) and the rest of the newly formed girl group take on a mash-up of "Rumour Has It" and "Someone Like You." The performance is also the show's 300th musical number.
The Glee episode titled "Mash Off" airs Tuesday at 8/7c on Fox.