[size=27]Specifically music videos (official or not)[/h]
Define
Arthouse (see: Deathgrips - Big House; or Sigur Ros - Fjogur Piano in Nitendler's post)
Spoiler:
An art film is typically a serious, independent film aimed at a niche market rather than a mass market audience. An art film is "intended to be a serious artistic work, often experimental and not designed for mass appeal"; they are "made primarily for aesthetic reasons rather than commercial profit", and they more often than not contain unconventional or highly symbolic content.
Abstract (see: Gotye - Giving Me A Chance; or Fleet Foxes-The Shrine /An Argument in Nitendler's post)
Spoiler:
Have you ever had a really intense fever dream, so much so that the visuals and actions in the dream made you nauseous - But you were strangely fascinated by the dream?
That's the visual side of abstract in a nutshell. Not to mention that it's also meant to be telling a story subtly and implicitly.
