***UPDATE: Google To Launch Music-Streaming Service (Market Watch, May 14, 2013). This could be a game-changer, as Google is a major infrastructure challenger to Apple. Also missing from my analysis below is Amazon, who could also become a major player, and does have a cloud-based music storage system today.

On the eve of the Future of Music Coalition’s Summit, where music licensing is prominent on the agenda, it appears that the horses in the streaming music race are finally lining up. Now, I could be totally off base on this, I’m just an indie musician with a software background and not a lot of insight into the behind-the-scenes happenings, but I think it’s shaping up to be an interesting race. I believe there are some silent bettors, the major music labels and Google, and it’s not really clear (yet) whom exactly is betting on whom. These players are listed in no particular order:

First, we have the apparent favorite, Spotify (16 million active users, 4 million paying,  subscriber-revenue-driven). They’re about to close another $100 million round of investments led by Goldman Sachs, who knows a good investment when they see one, right? Why is Spotify such a good investment when they are bleeding green? Because it reportedly has licensing agreements with the major labels that guarantee it will make a 25% margin, while handing over 75% of its revenue to the labels. Some view this as a millstone around Spotify’s neck, but if Spotify can hold on long enough to dominate the market and achieve some kind of workable cost model, they become a utility: an entity with a guaranteed margin and guaranteed income.