A night after Ed Sheeran performed "The A Team" at the 55th Grammy Awards with Elton John,  he took a more solitary turn on Conan. The English singer and songwriter brought only his acoustic guitar for a performance of "Lego House," the third single from his 2011 debut +. Wearing his usual jeans and a hoodie, Sheeran bobbed slightly in place as he sang in a lovelorn, rumpled voice and picked out notes on guitar.