Very good video on history of FM synthesis. Everyone should see it.
“… Seq1 is an aleatoric music sequencer aimed for soundscape creation and live performance. (Väisänen & Jauhiainen, 2010, p. 1) It intends to address problems with certain attributes of aforementioned instruments. Inspiration for the design came from such software based musical instruments as the reacTable which has been used by contemporary musical artists in their live performances. reacTable and recent musical instruments like it are based on large multitouch screens…”
Read the rest here if you will. The history bit might be interesting at least: