"Love Machine" (LOVEマシーン, Rabu Mashiin^?) is the seventh single of the J-pop idol group Morning Musume, released on September 9, 1999 as an 8 cm CD. It sold a total of 1,646,630 copies, making it a massive hit (a #1 single in Japan) and their highest selling single. In 2004, it was re-released as part of the Early Single Box and again in 2005 as a 12 cm CD. The single also marked the debut of the "Third Generation" member Maki Goto and the departure of Aya Ishiguro.

The original 8cm CD release was housed in a J-card-type 5" slimline single case instead of the then-industry CD snap-pack packaging, and came with a 12 cm CD adapter. This is one of only two 8cm CD singles released by Morning Musume to adhere this packaging (the other being their eighth single Koi no Dance Site (2000)).

In 2008, a remade version of the song was released by Scott Murphy of Allister in his album Guilty Pleasures 3. In 2009, the song was remade into Korean by South Korean girl group After School under the name "Dream Girl", and Avex Group posted a "RIKI version" by actor Riki Takeuchi on its official YouTube channel in celebration of the song's tenth anniversary.

The lyricist, composer and producer of both songs is Tsunku. "Love Machine" was arranged by Dance☆Man, while "21seiki" was arranged by Shunsuke Suzuki.

...
Wikipedia