Complex sentence: In 1954 Wolfgang Fortner founded the pioneering Institut für Neue Musik (Institute for New Music) at the Hochschule and later began a cooperation with the experimental electronic studio of the Heinrich-Strobel Foundation at the Freiburg branch of the Südwestfunks (now the Südwestrundfunk).
Split into simpler sentences: In 1954 Wolfgang Fortner founded the pioneering Institut für Neue Musik (Institute for New Music) at the Hochschule. It came, and to cooperate with the experimental electronic studio of the Heinrich-Strobel Foundation at the Freiburg branch of the Südwestfunks (now the Südwestrundfunk).