On Monday (29 June) the Kronos Quartet and Nonesuch Records released this short documentary film by Robert Edridge-Waks to celebrate the 30th anniversary of Black Angels.

The iconic album opens with the titular work by American composer George Crumb, which led violinist David Harrington to form Kronos 47 years ago, and continues with works by Thomas Tallis, Istvan Marta, Charles Ives, and Dmitri Shostakovich.