2d cad blocks of piano top view in AutoCAD, dwg file.

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!