Tonyo is your ex-bf, you were a singer, and he'd always go to your concert.

One day you were having a concert and his friends begged him to go with them, so he did, when you were about to sing you noticed him, and your eyes started tearing up, you whispered something to the music conducter and the atmosphere changed from happy to sad, then you sighed and you started singing, your breath was shaking, and you were singing the song you made about your ex aka tonyo.