Amazing Grace is a movie worth seeing and re-seeing and re-seeing again, a testament to the Queen of Soul at the height of her powers, live, in full color, in rich sound, resplendent.

The result was one of the most acclaimed albums of her career — and one of the most elusive film projects of all time, full of twists and turns that would have made Orson Welles order a stiff drink.

The effect is ecstatic; she sounds like the holiest of trumpets, with every note piercingly bright yet as soft as velvet. Listening to Franklin, you feel like you could ride that voice into the heavens. She’s not just a singer, she’s a human chariot.

This film is a powerful love letter to the Black Church, offering a soul-shaking introduction for the unfamiliar and a grandmotherly yank of the arm for those who know—it drags you from the theater straight into the pews.

Aretha Franklin didn’t transcend the gospel or gospel music; as first her album and now this marvelous documentary remind us, she did more than most to fulfill its potential for truth and beauty, devotion and art.