Just another fly on the wall

Frank offered his customary 'knock' and hearing Ms. Rose reply 'Enter' he came in. "Just here to empty the rubbish Ms. Rose, don't mind me." And most people usually didn't at all. Frank had overheard all sorts of things over the years, things no one would have any idea he knew since no one paid the lowly janitor any mind - and he figured just call him that, what was being a 'custodian' anyway?

His mind wandered and he didn't realize it, but as he took the bin from her desk and noticed the flyer for the opera on Rhonda's desk for Dialogues des Carmélites originally by Poulenc, a rarely performed opera. Without knowing it, he began humming the opening song sung by the Marquis de la Force and his son, the Chevalier.