One of the precepts that old jazz pros have taught young musicians for years is that it’s vital to be able to play any piece of music in any key at any tempo. Here’s an example. It’s from the days a quarter of a century ago when vibraharpist Terry Gibbs and clarinetist Buddy DeFranco teamed up and toured extensively. Their rhythm section at a club called the Cliff Side in Yokohama, Japan, in 1991 was Larry Novak, piano; Herb Ellis, guitar; Milt Hinton, bass; and Butch Miles, drums. Mr. Gibbs makes the introduction.