vintage recording equipment, and more than 2,000 items of memorabilia and artifacts. All four episodes of “STAX: Soulsville, U.S.A.” will be available to watch on MAX on May 20.

Also releasing on HBO Max this week is STAX: Soulsville U.S.A., a documentary series that is directed and produced by Jamila Wignot. This documentary, which previously premiered at South by ...