The artist is Jonsi, the lead singer/guitarist/songwriter behind Sigur Ros. The film is called Go Quiet, which is basically a film of Jonsi playing songs after waking up on New Years Day. Be sure to follow along to 1:23, when it picks up considerably. Great stuff; I am a lifelong fan.
From his website:
“the concept behind ‘go quiet’ was simple: it’s new year’s day in reykjavík, and jónsi awakens to a trashed house in the wake of his party. he avoids cleaning up and instead procrastinates by playing songs that reflect the night before, the bittersweetness of new year, and the melancholy of a year gone by” – director dean deblois.