Cory Monteith Photo

From: Photos and Audio: Tonight on GLEE- Ricky Martin, LMFAO, and More!

Tonight on GLEE, Will assigns the glee club a Spanish singing assignment, and enlists the help of his musically-inclined night school teacher (Guest star Martin). Meanwhile, Rachel spills the beans to Kurt and Mercedes on Finn's marriage proposal, and Mercedes has love complications of her own. The episode titled 'The Spanish Teacher' will include 'La Isla Bonita,' 'Sexy and I Know It,' 'Bamboleo/Hero,' 'Don't Wanna Lose You,' and 'A Little Less Conversation.' Check out photos and full audio clips below!