Complex sentence: Aghiatrias was a Czech side-project consisting of composer Vladimír Hirsch and sound experimenter Tom Saivon formed in 1999 as an offshoot of his sympho-industrial band Skrol.
Split into simpler sentences: Aghiatrias was a Czech side-project of composer Vladimír Hirsch with participation of sound experimenter Tom Saivon. The group was formed in 1999 as an offshoot of his sympho-industrial band Skrol.