i just cant's feed

I’ve been trying to find this bl manga but I cant remember the mc’s name i just remember its plot…
The mc was a “ghost songwriter” which he writes songs and gives it to someone but he didn’t get credited for. One time the mc found a lover, a single dad if I remember it correctly, his child loves the songs he produced but they didn’t know the mc was the one who wrote all of those. The last scene I read was the mc went mad (?) to the person he gives the song he write that he had enough and he want to write for his own but this person doesn’t give a fck about his request and said he should continue writing for him.

THATS ALL I CAN REMEMBER HUHU I HOPE SOMEONE WOULD HELP ME FIND THIS T—-T ITS BEEN A MONTH