Information for The Music of Hans Zimmer vs John Williams at Swansea Arena, Swansea (Concert). For one performance only, the very best scores from two of the most revered film composers of all time will be brought to life by the London Concert Orchestra and conductor Pete Harrison. Hans Zimmer and John Williams have worked with some of the world's most famous directors, and won countless awards with films that have been box- office hits, receiving huge acclaim. Their film compositions rank among the most memorable and popular of all time.