if they're students then this won't be a one-off, and will probably happen regularly. call the police to establish da law.They're up and partying again. Currently all singing along to Phats and Small - Got to turn around. Surprisingly tunefully too.
I can only assume they're on some good quality drugs as they didn't start partying until about three, which is when they got back from clubbing, I assume. Think they only moved in the other day so hopefully it's just a one off flat warning thing.