With Fleetwood Mac, came a new sound, exciting and diverse yet mainstream; the Kopecky Family Band elevates its male/female harmonies to multi-instrumental surprises, too.
The two-night Downtown Festival, largely on the Lower East Side, offered acts like Black Hippy and Palma Violets in a range of performance spaces.
Mr. Hanneman, who was a founder of the band Slayer while still in his teens, helped to create some of the darkest music and imagery in metal.
Mr. Hanneman was a founding member of the heavy metal band in 1982.
The duo, which split up in November, provided no hint about whether they would reunite or go on tour.