Wow, this piano doorbell concept, while cool, would probably get really annoying really fast. I mean how many people are coming to your door that can actually play any sort of decent tune on the piano and how many songs can you really play with just five keys anyway? Neat idea in theory but probably not well suited for anything other than a piano school or piano teacher’s house.
labexp via Freshome
Yamaha DGX-650 88-Key Graded Hammer Action Digital Piano in Black with Padded Bench, JVC Full-Size Stereo Headphones, 88-Key Electronic Keyboard Dust Cover and Alfred's Teach Yourself to Play Piano - Book + DVD