Born in Soufrière, Saint Lucia, Knoch is the daughter of Oliver Bendt, founder of Goombay Dance Band.

Alex Christensen, a judge on Popstars began collaborating with her on numerous projects.

In the summer of 2002, they released the single "Rhythm of the Night", a cover version of a hit by the Italian band Corona.

In 2003, Yasmin K. and Alex Christensen released the song "Angel of Darkness" as a promotion single for Eidos Interactive for the video game Tomb Raider: The Angel of Darkness.

After a four-year break, she reappeared with the song "Du hast den schönsten Arsch der Welt" ("You have the sweetest ass in the world") and a cover version of the 1996 hit "Run Away" by The Soundlovers.