Willis Music Keyboard & Reference Chart 2 pages Size: 14" x 11" Key signatures, scale finder, and time signature references on the back help to make this an excellent teaching tool! The front of the chart is matte varnish A large (28"x 11") keyboard reference chart that may be used as a demonstrative keyboard for piano class instruction or private teaching Key signatures, scale finder, and time signature references on the back help to make this an excellent teaching tool! The front of the chart is matte varnish