A new documentary looks back on the career of a singer whose undeniable talent wasn’t always enough for a limited and image-obsessed industry

Luther Vandross is R&B music’s tragic hero – a soulful soloist who was most popular while singing backup for rockers, a strict disciplinarian who could control everything except his weight, a hopeless romantic who died alone, miserable and far too young.

It’s a sad story revisited in Luther: Never Too Much, a new documentary currently in limited theatrical release that is expected to begin streaming early next year. Directed by the biographical film-maker Dawn Porter, produced by Jamie Foxx and arranged by Robert Glasper, the 160-minute film is a stark reminder of the aversions and prejudices that stalled Vandross’s breakthrough and ultimately broke him.