This month, I’d like to demonstrate how I play the intro to “An Infinite Regression,” the opening track from the latest Animals as Leaders album, Weightless. This part features a very unusual and unique “double-thumbing” technique that, I believe, was pioneered by the great jazz bassist Victor Wooten. As usual, all of the licks in this column are arranged for seven-string guitar (low to high, B E A D G B E), though I play the part on an eight-string.