“Mac DeMarco described “On the Level” as “kind of a sister song” to “Chamber of Reflection,” the woozy center of gravity of his 2014 album Salad Days. The comparison checks out, and not just because both songs bob as unsteadily as buoys in an oily harbor. Avoid the temptation to invoke yacht rock here, because leisurely breezes couldn’t be further from ol’ Mac’s mind. Where “Chamber of Reflection” ”