Complex sentence: Siouxsie approached "Hái!" like a vinyl release, with an A-side and a B-side; noting that this method was "so we could have an extroverted side and an introverted and calmer one".
Split into simpler sentences: Siouxsie approached "Hái!" like a vinyl with an A-side and a B-side. "So we could have an extraverted side and an introverted and calmer one".