K90 began as Mark Doggett and Chris Hancock, who were work colleagues, making music together in 1991/92. They made a track and didn't know what to call it, so Chris typed in 2 random letters, and two random numbers K A 9 0. The track wasn't released, but they liked the name and kept it as their stage name. A few months later, they had their first EP signed to then London hardcore label [l628] and when they went to sign the contracts, the label boss said I think you should drop the A [from your name] so they did, and from then on were known as K90. Chris later left the group and K90 became a solo project of Mark Doggett.