A French duo combining the sensual vocals of Mona Soyoc with the electronic machines of Spatsz, KaS Product is a benchmark of the French post-punk wave, and has become a cult for generations. Born of the January 1980 encounter between Spatsz (Daniel Favre) on synthesizers and drum machines and Mona Soyoc, a jazz singer and guitarist of Argentinian origin born in Stamford (Connecticut, USA), KaS Product released an obscure debut EP, Mind Seven, before touring with Marquis de Sade. Released in 1982, the cold wave and synthpop debut Try Out enjoyed international exposure and success thanks to the hit "Never Come Back". This was followed by By Pass (1983), recorded in Sonic Youth's studio in New York, which launched the band into a series of joint concerts. After the 3rd album, Ego Eye, recorded in 1984 and released two years later, the duo split up, returning to the stage in 2005. Following Spatsz's death on February 1, 2019, Mona Soyoc perpetuates the band's name with two new members, Pierre Corneau and Thomas Bouetel, who produce a new album entitled Reloaded (2025).