This Architectural Drawing is AutoCAD 2d drawing of 2d cad blocks of piano top view in AutoCAD, dwg file. The piano key layout simply repeats the same 12-note pattern over and over again. Each pattern consists of a group of 2 black keys, a group of 3 black keys and 7 white keys. In a full 88-key instrument, the layout of piano keys is repeated over seven times!
