LP edition. Brooklyn duo Mark Rogers and Mary Byrne recorded their debut, I Line My Days Along Your Weight, as a true duet: facing each other inches apart, intent upon listening. They wove together archaic instruments -- baritone acoustic, tricone resonator, golden-era flattop, space-age lap steel, upright piano, and hundred-year-old mandolin -- into a new and vibrant third voice. All the songs were recorded live to two-inch analog tape, the studio equivalent of tightrope-walking without…