I’ll be brief: This episode was pretty saucy, Claire needs a brush, Jin is sneakier in English, and Jack is still a fool. Also, I unearthed something awesome.
Spoiler after the jump
Jack’s son was playing Fantasie Impromptu by Chopin. It’s a famous piece of music that employs a unique time signature and a lot of tricky hand work (the right and left hands operate on their own agendas or in competition, if you will). The progression includes some unexpected repetition from earlier movements AND it ends ambiguously–like a fantasy, it’s both ominous and mysterious–a gentle resolution.
Think Damon and Carlton are trying to tell us something about how they intend to wrap up the show? Perhaps the two hands are Jacob and Smokey?