This short piece by Robert Fulford on the lifelong war between Kurt Weill and Bertolt Brecht (and now being carried on by their heirs) concludes thus…

Mack the Knife remains popular today but in the late 1950s it was everywhere. Lotte Lenya wrote to a friend: “You hear it coming out of bars, juke boxes, taxis, wherever you go. Kurt would have loved that. A taxi driver whistling his tunes would have pleased him more than winning the Pulitzer Prize.”