It isn't hard to trace the sound to its source. Well, hard on his ears, but simple. He's waited just long enough to be sure that this is intended to go on a while before making his way to the relevant door and knocking on it with his whole forearm, loud and quick enough that, hopefully, the noise doesn't blend in with the song.

If that gets the attention of whoever's staying in here Roland will be waiting, grimacing at the noise. He isn't angry. He isn't even more than a little bit frustrated. Mostly what he is is confused.

Swagger Jagger. What does that even mean.

Nevermind that.

Roland dismisses the thought and waits. If there's no answer he isn't going to break the door down or force it open - there are few worse ways to make a bad impression on a fellow tribute, especially one he has to live with - but maybe he'll think of something.