Complex sentence: White handled the mixing at the Mix room in North Hollywood, California, which was engineered by Justin Hergett with help from James Krausse, Paul Pavao and Edward Valldejuli.
Split into simpler sentences: White handled the mixing at the Mix room in North Hollywood, California. The track was engineered by Justin Hergett with help from James Krausse, Paul Pavao and Edward Valldejuli.