An acoustic or electric piano requires maintenance every now and then to keep it in good condition. Part of that maintenance is better done by professionals, but there's a lot you can do yourself, including keeping the piano dust-free for starters. A special piano-cleaning set is worth considering, bearing in mind it's important to always read the instructions carefully before applying any cleaning product, to be sure it's suitable for your type of acoustic or electric piano as there are different products for glossy as opposed to matte finishes.
