VIDEO: Gwen Stefani and Pharrell: “Spark the Fire” (LIVE ON THE VOICE)

Gwen Stefani and Pharrell Williams team up to debut their new single, "Spark the Fire." » Subscribe to The Voice: http://full.sc/HbIXEY » Watch The Voice Mondays & Tuesdays 8/7c on NBC! » Get even more The Voice: http://nbc.com/the-voice » Get The Voice Official App: http://bit.ly/VoiceOfficialApp Full Episode: http://www.nbc.com/the-voice/video/ Like The Voice: http://Facebook.com/NBCTheVoice Follow The Voice: https://Twitter.com/NBCTheVoice The Voice Tumblr: http://nbcTheVoice.Tumblr.com/ Google+: https://plus.google.com/+TheVoice/ The Voice Pinterest: http://Pinterest.com/nbcTheVoice/ Get more NBC: NBC YouTube: http://full.sc/MtLxIM Like NBC: http://Facebook.com/NBC Follow NBC: http://Twitter.com/NBC NBC Tumblr: http://nbctv.tumblr.com/ NBC Google+: https://plus.google.com/+NBC/posts The Voice 2014 USA YouTube channel features exclusive content with The Voice coaches, highlights from The Voice auditions, interviews with The Voice winners, as well as The Voice recaps and results. Learn more about The Voice contestants, The Voice tour, the eliminations, and follow your favorite performers all the way to the finale. The Voice 2014 - Gwen Stefani and Pharrell: "Spark the Fire" http://www.youtube.com/user/nbcthevoice