In 2007 and 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 the summer of 2007, and got both parts. Lovato played the lead character, aspiring singer Mitchie Torres, in Camp Rock. The film premiered on June 20, 2008 to 8.9 million viewers. Its soundtrack was released three days earlier; however, the music was considered less current than that of High School Musical. Gillian Flynn of Entertainment Weekly wrote that Lovato's acting skills were underwhelming and she "has the knee-jerk smile of someone who is often told she has a great smile". Lovato sang four songs on the soundtrack, including "We Rock" and "This Is Me". That summer, she began her Demi Live! Warm Up Tour before the release of her debut album and appeared on the Jonas Brothers' Burnin' Up Tour.