Director Jessica Edwards has captured the life and career of Mavis Staples -- formerly of the R&B and gospel family band, the Staples Singers -- in her brand-new documentary, Mavis! The film will make its premiere this Sunday (March 15) at SXSW in Austin. Ahead of its debut, Billboard has unveiled a clip of Staples performing with Tweedy – another family band featuring Wilco frontman Jeff Tweedy and his son, Spencer.

The trio teamed up on John Fogerty’s “Wrote a Song for Everyone” at last year’s Newport Folk Festival. Check out the incredible performance in the video above.

The Wilco singer has worked with Staples in the past, producing her 2009 Grammy-winning effort, You Are Not Alone, and 2013’s One True Vine. He also helped the powerhouse vocalist finish one of her father's, Pops Staples, previously unreleased albums, Don’t Lose This.

“As I spent more time with her and read more, the importance of her [father] Pops became really clear and it also [played in] the narrative of the film,” Edwards told Billboard. “So much of her life was so informed by him. Then you get to Jeff Tweedy and Spencer and that sort of family connection comes up again.”

“We definitely look at the way Mavis has found this other family in the Tweedys and how it very much informs their collaboration,” the director added.

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