Tummyrub AKA Kobus Nieuwmeijer (formerly Fractal Fissures and The Spiritual Beating System) produces downtempo and lounge music. Tummyrub was founded in 1989 and has its roots in Oxford, England. Tummyrub is one of the first music bands to distribute their music freely with electronic means through Bulletin Board Systems (BBS) and FidoNet and later on the Internet.
In 1990 Tummyrub was one of the first to produce and compose music with Fractal geometry software, known as Fractal Music which are Algorithmic compositions. BBC Radio 1 and BBC Radio Oxford featured Tummyrub in 2 shows dedicated to Fractal Music in 1991 and they also appeared in the press; Computer music magazine April 1991, Music Technology magazine July 1991 and The Independent May 1991. Tummyrub is dedicated to open source music and all releases by Tummyrub are freely available on the Internet.