Franz Biebl-Ave Maria Franz Xaver Biebl (1 September 1906–2 October 2001) was a German composer of classical music. Most of his compositions were for choral ensembles. Biebl was born in Pursruck, Germany in 1906. He studied composition at the Musikhochschule in Munich. Biebl served as Choir Director at the Catholic church of St Maria in München-Thalkirchen from 1932 until 1939, a..