One of this week's pianos... a fabulous Bösendorfer at Knox Grammar School. This one goes down to F (below the usual low A). The black keytops are a reference point for the pianist's peripheral vision when playing something outrageously fancy that covers the 'usual' gamut. Reminiscent of the infamous black pudding in Ripping Yarns - where "Even the white bits are black". They sound pretty wanky-amazing, these additional four notes.