What is the fine-grained topic of the following text: I am a Belieber and his song "Sorry" somehow takes me back to my Harry Potter Themed Party (I don't know why - probably because during our meeting, I requested the team to play "now" songs during breaks like Justin Bieber - Sorry - and they did. Only return the topic.
Listening to Justin Bieber's song "Sorry" and reminiscing a Harry Potter themed party.