Complex sentence: He began writing his own music by the age of eight and while a teenager at Huron Park Secondary School (in Woodstock, Ontario) he formed a band called "The Guards Of Zeus", with fellow classmates Jon Bartley and Mike McGinnis.
Split into simpler sentences: He began writing his own music by the age of 8, and by the time he was a teenager. During his years at Huron Park Secondary School (in Woodstock, Ontario), he formed a band called "The Guards Of Zeus," with fellow classmates Jon Bartley and Mike McGinnis.