Demi Lovato

The singer-songwriter cited an unspecified illness as their reason for stepping back

"I felt trapped, I felt I couldn't get out of this situation"

"It just put everything into perspective for me of, 'That could have been you, that almost was you, and how are you going to live your life now?'"

The star harks back to their earlier days with head-banging guitar solos and ferocious riffs

"She’s one of my biggest influences"

"Numbers told you not to / But that didn’t stop you," Lovato sings on the new song, lifted from forthcoming album 'Holy Fvck'

"It's just about feeling human at your core"

The song is taken from their upcoming new album

The singer performed new single 'Substance' on the show

"I want this song to make you feel like you’re having a damn good time"