Complex sentence: Though successful in the music industry, Yiruma, as all South Korean males are expected to, joined the South Korean military in 2006, giving up his British citizenship when he enlisted in the Korean Navy.
Split into simpler sentences: Though successful in the music industry, Yiruma, as all South Korean males are expected to, joined the South Korean military. In 2006, he gave up his British citizenship when he enlisted in the Korean Navy.