Complex sentence: When he was sixteen he joined the punk band The Hellboys, then he wanted to try another music genre and meet Yarol Poupaud and Adrienne Pauly, Following these encounters he started playing bass.
Split into simpler sentences: When he was sixteen he joined the punk band The Hellboys. Then he wanted to try another music genre and meet Yarol Poupaud and Adrienne Pauly, Following these encounters he started playing bass.