Well like most other people, he was born with it. AnswerParty
Gene Simmons (born Chaim Witz; Hebrew: חיים ויץ; August 25, 1949) is an Israeli-born American rock bass guitarist, singer-songwriter, record producer, entrepreneur, and actor. Known by his stage persona The Demon, he is the bass guitarist/co-lead vocalist of Kiss, a hard rock band he co-founded in the early 1970s. With Kiss, Simmons has sold more than 100 million albums worldwide.