Darrell Fitton has been played on NTS in shows including The Early Bird Show w/ Jack Rollo, featured first on 3 March 2023. Songs played include Blipsalt.

Darrell Fitton is an electronic musician from Manchester, England. Most of his work is recorded under recording monikers Bola and Jello, released primarily on Skam Records. Fitton has also contributed to electronic acts D-Breeze, Brahma and Ooblo, and Autechre's Gescom project. There are rumours that Fitton has decided to leave the music industry as of November 2007.

Fitton had his first electronic music release in 1994, on Warp's now infamous Artificial Intelligence II compilation, in 1995 he returned, but with the now more familiar Bola moniker releasing the Bola 1 12" on Skam Records. A rare set of 3 EPs called Shapes was released in 2000, pressed at only 300 copies; in September 2006, it was remastered and reissued in greater numbers by Skam, adding three bonus tracks.