- John Morgan
- and Roswitha Sperber
(b Berlin, Feb 19, 1936). German composer and organist. She had her first music lessons from her father, Joseph Ahrens, with whom she continued organ studies at the Berlin Hochschule für Musik, where her composition teacher was Boris Blacher. Subsequently she studied with Messiaen and Milhaud at the Paris Conservatoire. She made her début as an organist in ...