The story of a white opera singer and a promiscuous black jazz musician was a smash hit in Germany and abroad as soon as it premiered in 1928, but was banned by the Nazis as “degenerate art” as soon as they came to power. Krenek, an Austrian of Czech descent, composed several operas, though none was as popular as Jonny Spielt Auf.

Krenek was forced to flee Nazi persecution to the USA in 1938, where he worked as both academic and composer. This disc collects examples of his choral writing before and after that move. The centrepiece is Sechs Motetten nach Worten von Franz Kafka from 1959, in which he uses serial-composition technique to glue together scattered slivers of text. The five other choral works (also featuring soprano Caroline Stein) range through his whole career, starting in1923 and tracing his developments through 12-tone techniques to serial. Many performances are a cappella; others feature the discreet piano of Philip Mayers. Despite quality performances, this is heavy stuff.

Not only is there a very academic bent, but the music paints a relentlessly bleak world-view, where World War I and subsequent depression, the rise of Nazism and the horrors of the World War II create a backdrop of despair.

It’s not a recording I’ll return to very quickly. I prefer to remember Krenek for Jonny Spielt Auf.