On 6/24/2012 6:07 PM, IVP wrote: >> My curiosity is why the piano penetrates the wall > Perhaps it goes through the floor Exactly. Pianos are heavy, so the sound travels easily via the piano legs. Just place neoprene pads under the piano's legs. --Bob A --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .