Lil Wayne's electrifying, hotly anticipated, legendary "Unplugged" performance was one highlight after the next, with the rapper's live band turning familiar tracks such as "A Milli" and "Mr. Carter" into even more vibrant versions than the originals. Wayne also pulled out some surprises, covering a verse from Tupac's "Hail Mary" and premiering "Nightmares of the Bottom," a new track from the upcoming The Carter IV.

When MTV News spoke to Gil Smith, Lil Wayne's longtime musical director, the musician discussed the need to incorporate old favorites, new material from The Carter IV and random, unexpected tracks that would surprise even the most ardent fans. Mission accomplished.

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British indie pop band Florence + the Machine performs a selection of their hits in New York City during December 2011, featuring fan favorite tracks such as "Dog Days Are Over," "Shake It Out" and "No Light No Light.

Nashville, Tenn., singer-songwriter duo The Civil Wars performs a selection of their hits in New York, featuring a wide variety of fan favorite tracks such as "Poison & Wine," "Barton Hollow" and "I've Got This Friend.

International icon, singer, composer and Colombian guitarist, JUANES presents his first live acoustic album, “Tr3s Presents Juanes MTV Unplugged”. Juanes will continue to make history with the release of his first ever MTV UNPLUGGED, an organic presentation of his greatest hits including “Me Enamora”, “A Dios Le Pido”, “La Camisa Negra”, “Nada Valgo Sin Tu Amor” and more, plus three new songs (including the #1 hit single “La Señal”) and collaborations with Brazilian superstar Paula Fernandes and Spanish singer-songwriter Joaquin Sabina. The album was produced by the legendary Juan Luis Guerra in a historic collaboration full of energy and musical genius.

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From Metropolis Studios in New York City, alternative hip-hop band Gym Class Heroes delivers an intimate acoustic performance for a small audience, featuring a series of popular songs, with guest artists like Patrick Stump and Neon Hitch.

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The country star performs her hits including "Good Girl" and "Before He Cheats," as well as a surprise cover of Coldplay's "Fix You."