It would be a crime to have an article about the DX7 and not mention one of the most famous DX7-slingers: Jens Johansson

https://youtu.be/Ry_AP13ylVk?t=1147

https://www.youtube.com/watch?v=ocpi_saZQak&t=1390

https://youtu.be/6CJHt37ya88?t=33

Also a fellow geek. Happy to see his old page still up and running: http://www.panix.com/~jens/sect-index-brief.par