Unlike most of the music documentaries that have become so popular over the past few years, Mavis! is about a legendary songstress who still walks the earth and is as relevant now as she ever has been. And that’s saying something: Mavis Staples has been recording music and performing to raucous crowds for upwards of 60 years, first with her family in the Chicago-based gospel group Staple Singers in the ’60s and ’70s, and then on her own with a solo career that’s still building momentum today (she won a Grammy for her 2010 album You Are Not Alone, and her 2013 album One True Vine debuted on the Billboard 200 chart at #67, the highest debut of her career).

The film earns the exclamation point in its title by matching the spirited energy of Staples, celebrating to the high heavens that we’ve been so blessed as to have her share her gift with the rest of us. Her voice makes the earth rumble and makes the soul shake. She’s is pure magic, whether she’s singing the gospel songs from her early days, the activist anthems she belted in the ’70s, the folk music she learned from Bob Dylan himself, her eclectic Prince collaborations, or the heartfelt soul ballads off of her most recent albums. The film’s enthusiasm for Staples and her music never feels overembellished because, frankly, the lady deserves more praise than any one film could muster.

Director Jessica Edwards follows the chronology of Staples’ career starting with the formation of the Staple Singers by her musical maven of a father, warmly referred to by all of the movie’s beaming interviewees (and the rest of the world) as “Pops.” The group gained legendary status, particularly in the gospel community, by moving crowds at church performances and topping the charts with their runaway hit “I’ll Take You There” (a song used in every ’70s flashback in every civil rights movie ever). When you hear that classic first line—“I know a place….”—you know you’re taking a trip back in time. Staples recalls hearing the single on the radio for the first time and pulling the car over to the side of the road. “I had a fit,” she says with a warm grin. “I never thought I’d say I got tired of hearing my own self on the radio but…it was all over the place.”

Seeing Staples perform onstage is pure, blissful insanity. Her audiences erupt in a state of near hysteria as her voice crackles and explodes with energy, and as her bandmates explain, she never wants to stop singing. “When she starts going and people start yelling from the audience,” one of her background singers explains, “she will sing all night!” Edwards shows a sizable amount of amazing live concert footage, which is really the only one could ever paint the full picture of Staples as an artist.

Jumping at the chance to gush about their hero Mavis Staples on camera are a gaggle of music greats, including Bonnie Raitt, Wilco frontman Jeff Tweedy, Steve Cropper and the late Levon Helm, who’s seen sharing an uplifting jam session with Staples before his death in 2012. Bob Dylan and Prince also have strong presences in the film due to their influence on Staples’ sound (she also throws in quickly that she had an opportunity to “smooch” Mr. Dylan, who apparently had eyes for her for years).

Watching Staples recall the ups and downs of her life and career is to watch a woman fall in love with her memories. Two things are crystal clear: Staples has more love in her than she can contain (she releases it by singing it out to the world and swinging her arms around in the air) and she loves no one more than her father. Before he died, the Staple Singers reunited after a long recording hiatus to create an album centered on him. It wasn’t released as planned, but Staples handed over the songs to Tweedy, the producer of her two latest albums. In an invaluable piece of footage, Tweedy plays her a remastered version of one of Pops’ tracks, reducing her to tears. She and Tweedy share a tight embrace, a small but enormously emotional moment that cements Mavis! as something very, very special.

After dealing with a multitude of uninteresting “musical discovery” documentaries, along comes Jessica Edwards’ Mavis!, a giant celebration of an amazing singer’s successful career. And there’s absolutely nothing wrong with using a documentary to show off someone’s incredible talent, especially when it’s profiling someone like Mavis Staples. She was one of the more prominent members of The Staple Singers, a band started by her father Roebuck “Pops” Staples. Both Pops and Mavis, along with other Staples family members (the lineup would switch around frequently), started out as a gospel group before successfully transitioning into the mainstream with hits like “I’ll Take You There.” Edwards delves into the history of Mavis’ life and career, starting with her 40+ years as part of the Staple Singers before going solo after the death of her father.

Edwards doesn’t seem too interested in talking about any dramas or conflicts in Mavis’ life, and the documentary’s relentlessly positive tone may disappoint viewers expecting any sort of juicy backstage stories. But the doc’s upbeat nature is entirely representative of Mavis herself. She’s an incredibly charismatic figure, and so down-to-earth that every time she speaks it’s obvious to see she knows how lucky she’s been in life. And Edwards offers plenty of great information about Mavis and her family, especially Pops Staples, who gets properly recognized as one of the more progressive and groundbreaking musicians of his time. The film is both an interesting history lesson about The Staple Singers, and a portrait of a truly likable subject. And once the unexpectedly moving finale rolls around, it’s hard not to see Mavis! as a great how-to on making a good heartwarming music documentary.