Apple has completed its deal with Sony for its unannounced upcoming cloud music service, Bloomberg reports.

The company wrapped up an agreement with EMI yesterday, and finalized deals with Warner Music Group some time ago.

This means there’s only one more major label to go, and it also happens to be the largest: Universal Music Group. Depending on how smoothly talks with them go, it’s becoming more and more likely that we’re looking at a WWDC announcement.

Google and Amazon have already launched their own cloud music services, but they have foregone licensing deals and don’t have the ubiquity in the music space that Apple’s iTunes does.

I think it’s clear who is likely to be the winner in this war, but Apple has to enter the scene first.