 The album opens with Phantom Planet 's " sweet rock romp " rendition of Felix Bernard and Richard B. Smith 's " Winter Wonderland " . Sexsmith 's title track is less than minutes in length and has a shuffling beat . " Have Yourself a Merry Little Christmas " ( Ralph Blane , Hugh Martin ) features a downtempo , " jazz @-@ like " solo piano performance by Chris Martin of Coldplay . Exclusive tracks to the album include Vanessa Carlton 's piano @-@ driven rendition of the traditional song " Greensleeves " as well as Bright Eyes ' cover of " Blue Christmas " ( Bill Hayes , Jay Johnson ) ; others include Sense Field 's version of John Lennon and Yoko Ono 's " Happy Xmas ( War Is Over ) " and " What a Year for a New Year " by Dan Wilson , lead singer of the rock band <unk> . 
