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WATCH: Demi Lovato Says She’s ‘A New Person With A New Life’

Days after Demi Lovato shocker her fans with her new single “Sober,” she performed it at Rock in Rio Lisbon last night.

Lovato played the piano as she sang and at one point in the second verse she sang, "I wanna be a role model," and her voice cracked after being emotional.

After the performances, she shared it on Twitter to her fans saying, "Tonight I took the stage, a new person with a new life. Thank you to everyone who has supported me throughout this journey. It will never be forgotten.”