User blog comment:BenRG/Volume 2 Trailer/@comment-11188061-20140705061507/@comment-11188061-20140705202538

It could be part of Ruby's big plan for the day. The roles may have been passed on to them by rule. There's what seems to be a mandatory prom dance already, so why not acting? Singing, partying, whatever. Depends on how Beacon does things really.