Most of the bigger streaming music services have both a free tier for casual listeners and a paid level for truly committed music fans. Nokia doesn't want to be the exception to the rule. It's launching Nokia Music+, a paid version of its existing platform. Paying €4 per month ($4 in the US) gives perks that you'd normally expect from a more expensive alternative like Spotify or Slacker's premium tier: the upgrade ratchets up the audio quality, adds lyrics, allows unlimited skips in Mix Radio and enables as many downloads for offline play as the phone can hold. Aren't you suddenly glad that you picked up a 32GB Lumia 920? Not that you'll always need it to tune in -- Music+ adds web streaming for anything with a suitably capable browser. Nokia hasn't said just which countries beyond the US will get the more advanced service, but it should make a formal debut within the next few weeks.