Swedish percussionist Bengt Berger’s masterful Bitter Funeral Beer is a buried diamond, and all you need to unearth it is press PLAY. Unlike many fusion projects, this evocation of Ghanaian folk music betrays not a single fiber of pretension. Among his fellow sojourners is Don Cherry, whose pocket trumpet tells story after story against a backdrop of strings, reeds, and electric guitar. Vocalist Anita Livstrand adds a primal touch. The Fela Kuti-like drive of “Tongsi” and the funeral dance of “Darafo” yield some of the most ecstatic moments of the session, each a step across the border of expectation.