"Sweet Song" is a single

Single (music)

In music, a single or record single is a type of release, typically a recording of fewer tracks than an LP or a CD. This can be released for sale to the public in a variety of different formats. In most cases, the single is a song that is released separately from an album, but it can still appear...

 released in early 2009 by "Lady Bird feat. Son'i (from Popteen)"; Lady Bird

Lady Bird (duo)

Lady Bird are a dance music production crew from Japan, consisting of two men, DJ Ten , a disc jockey from Hokkaido, and Kazuhisa Hirota , a music producer from Fukuoka....

, a dance music duo consisting of DJ Ten and producer Kazuhisa Hirota, and fashion model Wei Son

Wei Son

is a Japanese fashion model who has been active in both the professional and commercial modeling fields since the late 2000s. She is particularly known in the gal scene, as a former major contributor to the Popteen magazine and an exclusive model for its sister magazine PopSister...

.

Background

The main track "Sweet Song" had been a popular song in the Shibuya

Shibuya

is one of the 23 special wards of Tokyo, Japan. It is also a surname of Japanese people, including:-People:*Shibuya Konnōmaru, a 12th century warrior*Kotono Shibuya , a female actor*Momoko Shibuya , a female actor...

 club scene and originally performed by another singer in Club Atom, a disco where DJ Ten had been scratching. DJ Ten and Kazuhisa Hirota formed Lady Bird in late 2007 and auditioned many female vocalists for "Sweet Song"'s major release, before meeting Wei Son

Wei Son

is a Japanese fashion model who has been active in both the professional and commercial modeling fields since the late 2000s. She is particularly known in the gal scene, as a former major contributor to the Popteen magazine and an exclusive model for its sister magazine PopSister...

, a fashion model who had appeared on the Popteen

Popteen

is a monthly teenage fashion magazine published by the Kadokawa Haruki Corporation in Japan. The first issue was published on October 1, 1980 by Kadokawa Shoten. Later issues were published by Asuka Shinsha who bought the magazine for 200 million yen...

magazine.

Releases

Lady Bird and Wei Son first released "Sweet Song" as a chaku-uta (ringtone song) on December 1, 2008 with the name "Sweet Song feat. XXX (from Popteen)". "Sweet Song feat. XXX (from Popteen)" reached the top-20 on the Dwango chaku-uta chart by December 26, 2008, before the singer's name was revealed to be Son'i (Wei Son).

The CD, "Sweet Song", was released on February 25, 2009, with six tracks; "Sweet Song", "Bitter Chocolate", "Sweet Song (DJ Kaya Remix)", "Sweet Song (Lady Bird Club Mix)", "Sweet Song (Inst)", and "Bitter Chocolate (Inst)". "Sweet Song" appeared on the Oricon

Oricon

, established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan. It started as , which was founded by Sōkō Koike in November 1967 and became known for its music charts. Oricon Inc...

 singles chart 3 times, peaking at #47.

Tracks

"Sweet Song" was later included in Lady Bird's first album STYLiST, and track #3, "Sweet Song (DJ Kaya Remix)", was featured in Dancemania

Dancemania

Dancemania is a series of remix compilation albums by i-DANCE. The series deals primarily with dance music, especially eurodance. Despite its tracks have been made by various musicians from all over the world mainly from the European continent, the albums have been released exclusively in Japan.The...

's Hime Trance 4.