Cex is a musical project helmed by Ryan "Rjyan" Kidwell and started in 1998. Although Cex and Kidwell are frequently used interchangeably, Cex expands to several people at sporadic points, such as particular tours or albums. In the past it has included Kidwell's musical associates, friends, touring partners, or high school bandmates. All of his music up until Oops! I Did It Again were classified as idm (intelligent dance music) and had very little vocals or lyrics for the most part.