YOU SAID:
Will you play your music if I sing my song?
INTO JAPANESE
私の歌を歌ったらあなたはあなたの音楽を演奏しますか?
BACK INTO ENGLISH
Do you sing my song Do you play music?
INTO JAPANESE
あなたは私の歌を歌いますかあなたは音楽を演奏しますか?
BACK INTO ENGLISH
Do you sing my song Do you play music?
That didn't even make that much sense in English.