Which work by Stockhausen from 1955-56 bridged the gap between the French and German styles of early electronic tape music

Gesang der Jünglinge

Explanation:

Gesang der Jünglinge or Song of the Youths was composed in 1955-56 by German composer Karlheinz Stockhausen. It is nowadays cited as the first masterpiece of electronic music.

Stockhausen managed to merge seamlessly sounds of the human voice with sounds that were many electronically. The theme is Biblical, referring to the youth from the Book of Daniel.

The work is said to integrate, for the first time two opposing styles - German "Elektronische Musik" and the French "musique concrète".