Sia wins this year's Christmas music derby, while Gwen Stefani is slowed by Blake Shelton. Plus new Christmas music from Hanson, Paul McCartney, Grace Potter and more.
This Week's Spotify Soundtrack includes songs for the season; previews of shows by Mark Kozalek, Anders Osborne, The Mercy Brothers and more; and new music from The Polyphonic Spree, Tracey Thorn and Zombie Zombie among others.