Hello all!  Asking my wife, who is working at the Swedish Performing
Rights Society, she immediately found a British composer, 1942 being
the year of his birth or death (or "transfiguration" as Richard Strauss
would have put it), working under the following pseudonyms:

  DE ZULUETA PEDRO
  LANCASTER J
  LEO MAX (GB)
  ZULUETA PEDRO (DE)

Best regards
Christofer Noering, Stockholm

 [ Well, blow me down!  I guessed about a pseudonym, but four
 [ "pen names!"  Maybe GEMA, the German clearing house, knows his
 [ real identity.  -- Robbie