Complex sentence: Drucker is also the father of Lee Rocker (born Leon Drucker), who is the double bassist for The Stray Cats, and Rosanne Drucker, an alternative-country singer-songwriter.
Split into simpler sentences: Drucker is also the father of Lee Rocker (born Leon Drucker), who is the double bassist for The Stray Cats. Father of Rosanne Drucker, an alternative-country singer-songwriter.