When saxophonist Rahsaan Roland Kirk drew closer to late-‘60s R&B trends, he had the fortune of being on Atlantic Records—a label that actually recorded R&B. The warmth of Kirk's recordings from this period were due in part to the ears of a producer who could also record the likes of Roberta Flack. This playlist lets you delight in artefacts from an era of healthy cross-pollination between genres.