Complex sentence: In a strange twist of fate, Thiele found Harmonica Slim's harmonica playing style both too rural and primitive for his purpose and replaced his parts by the more more jazz flavoured offerings of George "Harmonica" Smith, whom Thiele had recorded several times previously.
Split into simpler sentences: In a strange twist of fate, Thiele found Harmonica Slim's harmonica playing style both too rural and primitive for his purpose. He replaced Slim's parts by the more jazz flavoured offerings of George "Harmonica" Smith, whom Thiele had recorded several times previously.