In July 2007, Girls' Generation had their unofficial first stage performance on Mnet's School of Rock where the group performed their first single, "Into the New World" (다시 만난 세계). A documentary recording the story of the group's debut titled Girls' Generation Goes to School was filmed 由 Mnet during this time, revolving around their unofficial debut and first public performances through School of Rock.
Girls' Generation in February 2008 performing at Rajamangala Stadium in Bangkok, Thailand
The group's first single was physically released soon after, including an instrumental of the group's debut song and two other tracks: "Beginning" and "Perfect for You." The latter's Korean 标题 is "Wish" (소원), which later became the name of Girls' Generation's official 粉丝 club, S♡NE. The group's debut officially began on August 5, 2007, first performing on SBS Inkigayo, later on MBC Show! 音乐 Core and KBS 音乐 Bank. "Into the New World" achieved No.1 spot on Mnet M! Countdown. The group released their first self-titled full album in late autumn of 2007 with the lead single "Girls' Generation" (소녀시대), a remake of Lee Seung-cheol's 1989 song. Promotion for the single started in early November. The album also included the group's first single "Into the New World", "Perfect For You" (re-titled "Honey"), and eight other tracks 由 the group. The group first album has sold 更多 than 100,000 copies. The last pop-oriented girl group in Korea to accomplish this feat was S.E.S.
In early 2008, Girls' Generation began promoting their 秒 single from the album, "Kissing You", which won the group their first K-chart win after achieving the number one position on the KBS 音乐 Bank February chart.This song achieved the #1 spot on three major TV 音乐 rankings—SBS Inkigayo, M.net M.Countdown! and 音乐 Bank. In March 2008, the album was repackaged, re-released and re-titled Baby Baby. Girls' Generation released the teaser for their single "Baby Baby" on March 15, 2008. The single was released on digital 音乐 sites on March 17, 2008. The single, "Baby Baby", was released to promote the album. The group also performed "Baby Baby" on various 音乐 shows such as MBC Show! 音乐 Core, SBS Inkigayo, and Mnet M! Countdown in March and April. The album promotions was concluded on April 13, 2008, on Inkigayo.During the group's promotions, members Jessica, Tiffany and Seohyun were featured on a mini-album released 由 Roommate, a one-man band from Purple Communication. The mini-album was titled Roommate: Emotional Band Aid, and was released on December 1, 2008. The song performed 由 the three girls, titled "Oppa Nappa" (오빠 나빠; literally, Bad Brother), was digitally released before the album in April 2008. The song was performed live on SBS Inkigayo, KBS 音乐 Bank, and Mnet M! Countdown.Later in the year, the three members released "Mabinogi" (It's Fantastic!) together as the theme song for the Nexon game Mabinogi, with Tiffany participating in the 音乐 video.Mnet reality 显示 Factory Girl chronicled the members working as interns at fashion magazine Elle Girl.The program began airing in early October. In late 2008, the group also participated in the SM Town Live '08 音乐会 along with other SM Town artists.
