Complex sentence: His contemporaries at Wessex included producer Roy Thomas Baker, Chris Thomas, and engineers Tim Friese-Greene and Bill Price.He worked along with his very good friend Robert John "Mutt" Lange.
Split into simpler sentences: His contemporaries at Wessex included producer Roy Thomas Baker, Chris Thomas, and engineers Tim Friese-Greene and Bill Price. He had worked along with his very good friend Robert John "Mutt" Lange.