bossa nova, blues rock, 120 BPM, nylon-string fingerstyle, syncopated chord comping, melodic walking bass, brushed percussion, shaker sixteenths, solo guitar intro, sparse trio, dry room mics, tape saturation, close mono image, call and response, swung 4/4, male voice, intimate dynamics, 1960s studio, fragile buildup, near-collapse arc..male voice back vocals