Apparently, the danish songwriter's union (KODA) is in conflict with Google over how much YouTube should pay musicians.

If you tomorrow suddenly can't listen to Volbeat, Aqua, D-A-D, or Alfabeat on youtube, it's because KODA hasn't allowed the current licensing deal to be extended.

This is your irregularly scheduled Scandinavian reminder to join a union!
(I'm a member of two; KODA is one of them)

To be clear, it's Google that's about to remove all danish music from YouTube, because KODA won't accept a 70% decrease in licensing payment to musicians.

The new deal they're trying to negotiate is a collective deal including Norwegian and Finnish songwriters unions too, so it may or may not include all music from Norway and/or Finland too.

This could include bands such as ABBA, Roxette, Ace of Base, Avicii, Nightwish, HIM, Arch Enemy, HammerFall, Opeth, Apocalyptica.