Depending on how hard you hit the keyboard, it will play a different sample.
Velocity switches – a velocity curve, you can set this.
A soft velocity lends itself to being really good at quiet moment , whole notes, patterns during quiet moments, but not great as a rhythm.
Medium velocity is typically good for quarters.
Harder velocities tend to be for rhythms – 1/8’s etc
Ian demonstrates how adding an octave can be beneficial in the higher register and playing at a higher velocity.
You need to have great feel – tone, and technique are awesome but need to be able to feel the music