One of the most vocal critics of abstract expressionism at the time was New York Times art critic John Canaday. Meyer Schapiro and Leo Steinberg along with Clement Greenberg and Harold Rosenberg were important art historians of the post-war era who voiced support for abstract expressionism.
Keyboards should be of appropriate size and key-spacing to accommodate most users. Generally, the horizontal spacing between the centers of two keys should be 0.71-0.75 inches (18-19 mm) and the vertical spacing should be between 0.71-0.82 inches (18-21 mm) (Figure 9).
Some authors classify modern pianos according to their height and to modifications of the action that are necessary to accommodate the height. 1  Studio pianos are around 107 to 114 cm (42â45 in) tall. 2  Console pianos have a compact action (shorter hammers), and are a few inches shorter than studio models.