Cobblestone Jazz is Mathew Jonson on drums and SH-101 bass, programmer Tyger Dhula, and Danuel Tate on keys and vocoder, Itiswhatitis Recordings, Vibraphone Biography Cobblestone Jazz have been performing live electronic music for four years on the west coast of British Columbia. The three members of the group are programmer Tyger Dhula, keyboardists Danuel Tate and Mathew Jonson, whose recent works for Itiswhatitis, Minus and Substatic have brought him international recognition.