Demi Lovato premieres their brand new single, “SUBSTANCE,” tonight on Jimmy Kimmel Live! Be sure to check out the stellar performance, hilarious interview with Mark Rober, and even a performance of Demi’s smash hit song “Confident” using a DIY toy train music machine. SUBSTANCE is available now across all platforms, and the thrilling music video is out now on YouTube! It’s a great day to be a Lovatic ❤️‍🔥🎸💥 . 📸: ABC/Randy Holmes . . #DemiLovato #Kimmel #JimmyKimmel #JimmyKimmelLive #HOLYFVCK #alignPR