Use a slightly damp cloth and gentle soap. Keep moisture from the sides of the key. Clean each keytop individually and wipe it dry immediately. Use a different cloth for black keys, in case there is some dye that is transferred. The cabinet should be cared for as you would a piece of fine furniture.
Some manufacturers sell cleaning products specially made for their finishes.
In most cases, a soft dust cloth will do just fine. Ask your technician what type of cleaning product he recommends. Moving Your Piano Should it become necessary to move your vertical piano for the purpose of room arrangement, be sure the weight of the piano is shifted to the rear casters before attempting to roll the instrument. Resistance of carpet pile or other rough surfaces can cause damage to the front legs. Similar caution should be exercised when moving a grand piano.