Complex sentence: It was founded in 1976 by composer Iancu Dumitrescu and specializes in the performance of contemporary classical music, more particular it is the main promoter in Romania of the Spectral Music trend.
Split into simpler sentences: It was founded in 1976 by composer Iancu Dumitrescu and specializes in the performance of contemporary classical music. It is the main promoter in Romania of the Spectral Music trend.