德国欧陆舞曲组合U96核心人物，身兼DJ、制作人、歌曲创作。

Alex Christensen (born 7 April 1967), better known by his stage names Jasper Forks or Alex C., is a German dance music composer, producer, and DJ, generally known as the face, and one of the founding members, of U96. Since 2002, he has been collaborating with Yasmin K. also known as Y-ass.

Christensen started in 1991 as a music producer and DJ, and had his first success in 1992 with U96 with a techno version of Das Boot. In several countries this song was the first techno song to obtain a number one position. Since 2002 Christensen also works under the name Alex C. and frequently collaborates with Yasmin K. whom he met as a judge on the second season of Popstars.

As a producer and/or composer Christensen worked for big artists as Right Said Fred, Tom Jones, *NSYNC, Rollergirl, Marianne Rosenberg, Sarah Brightman, and ATC.

Christensen represented Germany at the Final of the 2009 Eurovision Song Contest in Moscow together with Oscar Loya, performing the song "Miss Kiss Kiss Bang" finishing in 20th place.

Alex Christensen's song "Doktorspiele" which featured additional vocals from Yass, won the 2008 Eurodanceweb Contest, which were determined by points assigned by a professional jury of disc jockeys, journalists, music producers, webmasters, and radio speakers from all over the World.