Jazmine Sullivan has authored the kind of songbook that could form the basis of a jukebox musical. Given the versatility the R&B artist has displayed as a gospel-reared and stage-trained powerhouse vocalist, the production would require a large and exceptionally talented ensemble to do right by the source material. Stymied before she was able to release an album recorded in her mid-teens, the Philadelphia native broke through in her late teens as a songwriter with "Say I" (2006), a Top 40 hit for Christina Milian. Shortly after that, she launched her career as a headliner with...