Not really any, honestly. Smaller keys are harder for me to play and often don't give a proper sense of weight. If I'm traveling, I'll lug around a controller w

Not really any, honestly. Smaller keys are harder for me to play and often don't give a proper sense of weight. If I'm traveling, I'll lug around a controller with full-sized keys. If I'm tinkering with notation on the go without the formality of a full-sized piece of gear, I'll often jam it out on my laptop's keyboard in a tracker