Exclusive: Demi Lovato Teams Up With Nick Jonas On New Track ... And It's Not 'Avalanche' — MTVWhat's better than one Demi Lovato and Nick Jonas collaboration? Two Demi Lovato and Nick Jonas collaborations. Duh. That's right, Demetria confirmed a second duet from the pair -- eek! So for all of you losing your mind over the announcement of "Avalanche" (I'm not excluding myself from this tally -- trust!), the singers have just given us another thing to go nuts over.