Tystion (English: Witnesses) was a Welsh language hip hop band from Carmarthenshire.
In 1996, MC Sleifar (Steffan Cravos) and G Man (Gruff Meredith) got together and released a few cassettes themselves.
A year later they released the album Rhaid i Rhywbeth Ddigwydd (Something's Got to Happen), recorded with future Murry The Hump member Curig Huws, on their own Fitamin Un label.
Cravos was then joined by fellow rapper MC Chef (Gareth Williams) and Clancy Pegg on bass and keyboards.
The announcement was made by Steffan Cravos from the stage of Maes B at the National Eisteddfod in St David's, at what was to be their last gig.