On all of his projects — Grammy-winning albums, playing keys with Maroon 5, fronting a full string section in his NPR Tiny Desk Concert — PJ Morton evinces his mastery at updating classic soul and R&B with modern sounds. His latest full-length release, Watch the Sun, sees him joined by some of his own sources of inspiration, Stevie Wonder and Nas. The three combined forces on Morton’s track “Be Like Water,” which recites an uplifting mantra over unsettled harmonies. The effect is hypnotizing. Morton spoke with Switched on Pop about what it was like to work with his heroes and to share overlooked modern classics from Wonder’s and Nas’s catalogs. Learn more about your ad choices. Visit podcastchoices.com/adchoices