Another month, another amazing mixtape from our contributing guitarsmith and all-around good guy J. Emery Blatchley. “Stride” is the second in what should prove to be a long, fruitful lineage of mixes, a bloodline of songs that will extend from J’s ears to yours each month. This time around, the sonic emphasis is placed on a time in music history when alternating-thumb, fingerpicked polyrhythms weren’t the exception…they were the rule. Kinda. There’s also a hand-picked potpourri of contemporary envelope-pushers to enjoy for those less keen on the Joplin jive.