In this video I'm going to explain you how to control 3rd party VST velocity in Fl Studio 12 Piano Roll!If you have any question leave a comment below.If you. Step 2: Use the Claw Machine (Optional) The Claw Machine is a tool used to add variation in note lengths and triggering. Free UK Delivery on Eligible Orders Whether You're Starting Out or a Seasoned Pro, We've a Piano Keyboard For You Randomize Velocity in FL Studio Step 1: Create a Progression of Notes First, choose an instrument, and then open its Piano roll. Save Time and Shop Online for Your Kitchen.