"What is this song about? : is " این آهنگ درباره ی چیه؟ I don't understand ? : is " نمی فهمم یا متوجه نمی شم " in aahang darbaareye chie? " nemifahmam or motevajeh nemisham

این آهنگ درباره چیست؟ (in ahang darbareye chist?) یا (or) این آهنگ درباره چیه؟ (in ahang darbareye chie?)

I suggest learning this phrase: In chi migeh? این چی میگه؟ Literally it is: what it says? Can be applied to almost anything, a song, a book, a shouting neighbur, ...