A typical piano has 88 keys spanning just over seven octaves. There are other, smaller keyboards or synthesizers that have fewer keys – most come in increments of 25, 32, 49, 61 or 72 keys.

A typical piano has 88 keys spanning just over seven octaves. There are other, smaller keyboards or synthesizers that have fewer keys – most come in increments of 25, 32, 49, 61 or 72 keys.

German pianist Volker Bertelmann, aka Hauschka, makes music with his "prepared piano," wresting disruptive sounds from its 88 keys by outfitting the strings or mallets with objects such as ping ...

But 88 Keys is written for music lovers and amateur enthusiasts, points out another reader with a bit more generosity of spirit, comparing it to a college course on the history of science for liberal ...