After diving into the endless world of viral videos I came to the realisation that many of these videos revolve around music. Is there something inherently shareable about music? Or is it that you are more likely to play it over and over again if it has a memorable combo of tune and lyrics to it?   The record-holder for most YouTube views (currently at 2.5 billion) is, of course, PSY’s “Gangnam Style”. Annoyingly enough, Psy’s song “Gentleman” is currently…