Sound and visuals
If you are interested in Visual Music you will - without any doubt - at one point hear the name of Sebastian Oschatz. Whiz kid and genius.
Via Generator.x : "Sebastian Oschatz is a German media artist and educator with a background in Computer Science. At one point he was a third of the experimental music ensemble Oval, famous for their uncompromising systems-based approach to the creation of sound. [...]
Oschatz is one of the founders of the Frankfurt-based media company Meso, established in 1997 to work with experimental media interfaces and interactive installations. [...]
Meso is also the developer of the visual programming tool VVVV, created originally to run Meso's own projects.."