Demi Lovato

Demi Lovato began her music career in 2008 following her role in the Disney Channel film "Camp Rock," immediately establishing herself as a teen pop-rock artist. Her debut album "Don't Forget" and follow-up "Here We Go Again" (2009) both entered the Billboard 200 in the top five. Working with the Jonas Brothers on early material, Lovato's initial sound featured guitar-driven pop-rock before her style evolved in later years.