This apparently cannot be sequenced which is a shame but it's worth checking out if you have Reaktor:

Serenade v2.0 By Chet Singer
https://co.native-instrum...tail&patchid=12335

Basically you play the notes on the keyboard while "bowing" via a mouse slider (or mod wheel). It's an incredible simulation of violin, viola, cello and bass considering that it's done in Reaktor. Lots of fun to play!