From 2007 to 2008, Lovato played Charlotte Adams on the Disney Channel short series As the Bell Rings. Lovato auditioned for the channel's television film Camp Rock and series Sonny with a Chance during 2007 and got both roles. Lovato played the lead character, aspiring singer Mitchie Torres, in Camp Rock. The film premiered on June 20, 2008, to 8. 9 million viewers. Gillian Flynn of Entertainment Weekly wrote that Lovato's acting skills were underwhelming and that she "has the knee-jerk smile of someone who is often told she has a great smile". The film’s soundtrack was released three days earlier; however, the music was considered less current than that of High School Musical. It debuted at number three on the US Billboard 200, with 188,000 units sold in its first week of release. Lovato sang four songs on the soundtrack, including "We Rock" and "This Is Me". The latter, Lovato's debut single, debuted at number 11 on the US Billboard Hot 100 and later peaked at number nine, marking her first entry on the chart. That summer, Lovato signed with Hollywood Records and began her Demi Live! Warm Up Tour before the release of her debut studio album, and appeared on the Jonas Brothers' Burnin' Up Tour.