The violin was his passion, so much so that in 1797, he published a pamphlet on the changing style of violin-playing between the Baroque and Classical eras, called Metodo per Violino. He ended up composing a handful of notable works, but his “educational” pieces are definitely the most well-known and still studied today in conservatories. Campagnoli wrote 30 Preludes for violin in all 24 keys, 41 Caprices for solo viola, and other Divertissements.
Once you’ve laid down your piano track, you can quantize it so that your attacks line up perfectly with the grid. This is a good way to make sure everything is in time and won’t confuse your listener with any off beats. But don’t rely too heavily on the grid or you risk making your music sound stale. (*Luckily, by using randomization techniques, you can improve that too!)