Complex sentence: Some points of comparison can be established with the Toronto based MusicWorks Journal and cassette, launched 1978, or with the ROIR cassette only releases of various musical styles, from Flipper to Lee Perry to Einsturzende Neubauten, launched 1981.
Split into simpler sentences: Some points of comparison can be established with the Toronto based MusicWorks Journal cassette series-launched 1978. And with the ROIR cassette-only releases of various musical styles (from Flipper to Lee Perry to Einsturzende Neubauten) that was launched 1981.