3:08 David Garrett - Happy (Official Music Video) 2:12 Happy Epic Violins by Carlos Estella 4:29 David Garrett - Viva La Vida 3:24 Happy - Pharrell Williams (string cover) - Simply Three 3:15 Happy (Pharrell) - Violin Cover - Josh Vietti 4:31 Wake Me Up - Avicii (violin/cello/bass cover) - Simply Three