Rick Walker is a jack of all trades. The percussionist/producer/live-looping pioneer has played with bands that specialize in everything from British Invasion-style rock to world music, from jazz fusion to electronica, and has never been content to stick with one thing for very long. A lot of this stems from moving around a lot during his youth. “I was an air force brat, and in the first nine years I lived, my family moved nine times,” Walker says. “We saw a lot of exotic things, and I became a xenophile.