Reri's activites

Does anyone know the names of songs that ML sings throughout the story? I'm really curious about their theme and type ╮(￣▽￣)╭

hating on su ah for having a trauma is crazy... the author just drop a glimpse of his past and people are already mad, we all know that he did bad things to juhyeok and his trauma's might not validate his past actions but I hope to see a character development for the both of them