" i love to hear your sing" this sentence speak to Korean "나는 당신(의) 노래(를) 듣는게 좋아요" or "난 당신 노래 듣는게 좋아요" = naneun dangsin(ui) norae(reul) deunneunge joayo
n (의),(를) are a postpositional word. say to Korean "조사(josa)".
조사( a postpositional word) is able to omit when speaking than writing.
love = 사랑,사랑해(saranghae) , like = 좋아,좋아해(joahae)
but most people use "좋아(like)" than "사랑해(love) in this situation.
"please sing for me" speak to KOrean "나를 위해 노래를 불러주세요" = nareul wihae noraereul bulleojuseyo
or "날 위해 노랠 불러주세요" = nal wihae norael bulleojuseyo
"날" is abbreviation of "나를" also "노랠" is abbreviation of "노래를".