Complex sentence: As a secondary school music teacher in Toronto in the early 1970s he taught band, jazz band, and general music courses that focused on engaging students in composing in a variety of styles, including pop and rock songwriting.
Split into simpler sentences: As a secondary school music teacher in Toronto in the early 1970s, he taught band, jazz band, and general music courses. His general music teaching focused on engaging students in composing in a variety of styles, including pop and rock songwriting.