Air Ghoul. Pianist’s hands. Nothing else needed to say.
Can you do a drabble about the Sakamaki and the Mukami family being forced to have a singing competition by Karlheinz with Yui as the judge? They're all singing their MORE character songs and if Yui doesn't like their performance, she can pull the trapdoor on them (make Ayato, Kanato and Ruki fall, please? And make Yui run up on the stage to hug Subaru and Azusa?) The Tsukinami's barge in halfway saying they can do much better (Bloody Best II and Versus Song)? And you can decide how it ends ;)