He won the title of singing champion in the competition.
Tips
culture
Title made famous by Hunan TV's 《我是歌手》 (I Am a Singer, 2013 onward); each season crowns a 歌王 from a tournament of established singers. The female counterpart is 歌后 (gēhòu, queen of song).
usage
Used as both an honorific ('the king of pop') and a competition title. Compare 影帝 (yǐngdì, best actor, 'film emperor'), same emperor-image template.