For a long stretch of time in the 1950s and early '60s, George Shearing had one of the most popular jazz combos on the planet -- so much so that, in the usual jazz tradition of distrusting popular success, he tended to be underappreciated. Shearing's main claim to fame was the invention of a unique quintet sound, derived from a combination of piano, vibraphone, electric guitar, bass, and drums. Within this context, Shearing would play in a style he called "locked hands," which he picked up and refined from Milt Buckner's early '40s work with the Lionel Hampton band, as well as...