(Easy Piano Songbook). Sixteen of the most popular new tunes from 2014 are presented in this easy piano collection, including: All of Me (John Legend) * Am I Wrong? (Nico & Vinz) * Best Day of My Life (American Authors) * Dark Horse (Katy Perry) * Fancy (Iggy Azalea) * Happy (Pharrell Williams) * Let It Go (Idina Menzel) * Pompeii (Bastille) * Problem (Ariana Grande) * Sing (Ed Sheeran) * Timber (Pitbull) * and more.