Girls' Generation first performed on M.net "M! Countdown" in July 2007. Even though their performances were never played on television, videos of their performances were posted on the Internet. The girls performed "Into the New World"(), which became their single. "M.Net's Girls Go To School" was filmed during this time, to show how the girls made their debut. The show ended after 9 episodes, when they finally appeared on another show, "School of Rock".