[header] How to write a korean song [title] Learn the language. [step] Get rid of any thoughts such as " ah, man! Why does it has to be the language first? ! ". In order to make a korean or any asian type song, you must know the language. 
For language help, you can get a korean language tutor or you can teach korean yourself by using a book. There are many different ways to learn a language and my ways aren't the only ways.