Sabiston, a professional programmer and engineer, got Nintendo to send him a DS software development kit which allowed him to pump out a sweet painting and animation app to make his DS bot a visual virtuoso (example pictured left).

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"Sunflowers" (1888 or 1889), from Philadelphia's own collection, is a virtuoso performance in color harmony, showing a ceramic vase of perky yellow blossoms against a swirling cerulean background, but it is entirely orthodox from a compositional standpoint, as the vase sits squarely in the middle distance at eye level.

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Never a guitar virtuoso (at least not in the commonly understood "musical" sense of the word), his playing has always been intrinsically in service to his band and its songs.

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Mr. Schwimmer, 58, was familiar with its sound, but he hadn't seen it played until the late 1980s, when a clip of Clara Rockmore (1911-1998), perhaps the instrument's greatest virtuoso, ran on television.

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