Nine of the most popular covers by these YouTube superstars whose video mashups featuring creative piano and cello arrangements have brought them a worldwide audience. This collection features piano solo arrangements with an optional cello part for the songs: Bless the Broken Road • Fight Song • Jesu, Joy of Man's Desiring • Line upon Line • Say Something • A Sky Full of Stars • Thinking Out Loud • What Are Words • When You Say Nothing at All.