Grammys 2015: Ed Sheeran Performs 'Thinking Out Loud' with Questlove, Herbie Hancock, John Mayer

Ed Sheeran performs on stage at the 57th Annual Grammy Awards in Los Angeles February 8, 2015. 

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The past year's favorite rust-headed troubadour brought the emotion during a performance of his spare, guitar-driven "Thinking Out Loud" at the Grammys, with a legendary backing band made up of Questlove on drums, Herbie Hancock on keys and John Mayer on lead guitar.

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The song, which reached a peak of No. 2 on the Hot 100, is a saccharine-sweet but forlorn ditty that Sheeran hit perfectly and brought the house to its feet. (Sheeran obviously found a space to calm down between his frazzled red carpet appearance astride Ryan Seacrest and this performance.)