The Crazy Genius Composer Returns is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

The Crazy Genius Composer Returns synopsis: Success, fame, family… In an instant, the genius composer, Min Hyunseung, lost it all. On the brink of death… he wanted to live a different life, one where all those continuous misfortunes couldn’t just be claimed as karma. “How did this happen…?” He was given another chance to live.