YOU SAID:

I just want to know what song describes my life (because I turned 14 years old)

INTO JAPANESE

私の人生を表す歌が知りたいだけです（14歳になったので）

BACK INTO ENGLISH

I just want to know the song that represents my life (since I turned 14)

INTO JAPANESE

私の人生を代表する曲を知りたいだけです（14歳から）

BACK INTO ENGLISH

I just want to know the song that represents my life (from the age of 14)

INTO JAPANESE

私の人生（14歳から）を代表する歌が知りたいだけです

BACK INTO ENGLISH

I just want to know the songs that represent my life (from the age of 14)

INTO JAPANESE

私の人生（14歳から）を代表する曲を知りたいだけです

BACK INTO ENGLISH

I just want to know which songs represent my life (from the age of 14)

INTO JAPANESE

(14歳からの)私の人生を代表する曲が知りたいだけです

BACK INTO ENGLISH

I just want to know the song that represents my life (since I was 14)

INTO JAPANESE

私の人生を代表する曲を知りたいだけです（14歳から）

BACK INTO ENGLISH

I just want to know the song that represents my life (since I was 14)