1) Brecht collaborator 2) Brecht collaborator kurt 3) Composer 4) Composer kurt 5) artist from Germany 6) Kurt weill 7) Mack the Knife composer 8) Mack the Knife creator 9) One Touch of Venus composer 10) Speak Low composer 11) Street Scene composer 12) The Threepenny Opera composer 13) Threepenny Opera composer Found on https://www.crosswordclues.com/clue/weill