What is the best form for music consumption ? Yes, you guessed it right, free. So spotify gives users free music( You do have the paid service too) to users and synchronizes that to the phone ( Only if it’s an android or an Iphone. You know WP7 always catches up)
The best aspect to this service is, getting all the music you want for free and above all, you are not labeled a pirate 
You can use spotify as a paid or a free user. A paid user would see no advertisements. As a paid user you are free to listen to the songs offline too once synchronized to your phone or other music device.
Spotify’s Business Model
Every time a user listens to a song, Spotify pays the music label and you can either pay a monthly fee, or have an ad filled music experience. You can find more information about the expectations pre-launch in pre release link . This link has some important marketing documents that’s worth a look
I believe that the spotify experience is simply better than the ones that are available in the US right now. Another important positive step that Spotify has taken, is the well defined tiers for its paid and free customers. There is enough value, if one may want to consider jumping to the higher tiers. Another game changer could be, teaming up with facebook and providing a streaming music service, which is already provided by others, but still worth a chance, considering the immense visibility that facebook possesses.
The advertisements are not intrusive and Spotify has tried to keep it in an area close to its streaming music service. I have seen ads that are from recently released music labels which I believe is creatively brilliant.
In summary, I think Spotify is a great service and an innovative model that is able to make both the labels and users feel that they are getting the better end of the stick.
Worth a try
