He is a recording artist for the Motette, Organophon, and Wergo labels and has made various radio and television recordings in Germany, the United States, and Australia. His organ and chamber music compositions are published by Taverner Edition. Author of Alexandre Guilmant: Life and Work and The Organ at Wiesbaden Marktkirche, he also translated the German edition of Michael Murray's biography Marcel Dupré: The Life of a Master Organist.
In 1985, Hans Hielscher was organist for Immanuel Presbyterian in Los Angeles in an exchange program with Samuel John Swartz. He appeared as guest professor and lecturer/recitalist at the University of Redlands in 1986 and 1993, where his subject was 19th century French organ music.
Hans was awarded the Chevalier de l'Ordre des Arts et des Lettres by the French
government in 1985 for his worldwide promotion of French organ music.