Because playing the violin is hard and emulating the thing is a different challenge. Of course, sequencing a violin track with just note on/off and velocity (i.

Because playing the violin is hard and emulating the thing is a different challenge. Of course, sequencing a violin track with just note on/off and velocity (i.e. with a keyboard) is a poor-approximation. Better controls and using automation can be transfered back to other sounds for example. It's serious fun at least. We say to play music, after all.