To avoid double key sounds, lay the piano flat until the keys conform vertically. When storing, roll up the piano to prevent unwanted dips between notes caused by silicone rubber losing its shape.

This portable keyboard is a great tool for preteens to practice their hand positions and learn where the keys are when they're on the go. It's not meant for playing intricate musical pieces, but it gets the job done and could be a useful learning tool for small children.