On Dec. 24, 2013, Matthew E. White could not fall asleep in his childhood bedroom. The Richmond singer, bandleader and modern soul visionary had returned to his parents’ home in Virginia Beach for the holidays. During the previous 18 months, he’d toured Europe and America extensively, played Primavera and Glastonbury, performed at The Hollywood Bowl and the Sydney Opera House, and even staged a live rendition of his surprise-hit debut, Big Inner, with a band of 30 members. Big Inner earned five stars in The Guardian and a spot on its year-end list, plus those of Pitchfork, eMusic and Consequence...