synthesist

noun

1. One who synthesizes.

   “By taking widely disparate streams that haven't been formally in contact with each other, you become a synthesist and create new forms.”

2. A musician who programs or plays a synthesizer.

   “None of these had the artistry of Carlos and often used the Moog to play a solo line from a standard pop tune. None were hits. The use of the synthesizer for emulation was, as I have said, rejected by many early synthesists.”