The core of the band consisted of Kevin Drew and Charles Spearin, and started out as a two person recording outfit. The "KC" in the band's name was taken from the initials of their first names. They released two albums of mostly instrumental music. The duo's debut album Captured Anthems for an Empty Bathtub was sold by Drew and Spearin exclusively through one shop in 1998 and quickly sold out.
The group released a second album in 2000 entitled Anthems for the Could've Bin Pills on Noise Factory Records, with the track listing featuring six blank tracks of 4 seconds each before the six music tracks, the blank tracks representing the six tracks on Captured Anthems. When Captured Anthems was reissued by Noise Factory in 2003, the opposite was done (i.e. six music tracks followed by six blank tracks).
The two albums by K.C Accidental, long time out of print and out of reach, were reissued by Arts & Crafts on 2CD/2LP format and digitally in 2010 
On June 21, 2013, K.C. Accidental performed a "new 15-minute song" entitled "Summer Withdrawal" live at Jason Collett’s Courtyard Revue in Toronto, Canada. It was the first time the band had performed in 13 years.
Almost exactly one year later on June 20, 2014, K.C. Accidental reconvened for a full live show at the North by Northeast festival.