The battel between Google and Apple have now been pushed to a whole new level. With Google launching their music store, which for now is available only in the US. Google has singed-up with most record labels in the US expect Warner Music. The reason Google's store is not available outside of the US is because they have not signed deals with music labels outside of the US. Song prices range from 69c to 99c and $1.29, the same prices you find on Apple's iTunes.
Not having a tie-up with Warner Music will mean that music from band's like Led Zeppelin will not be available. Music from the store will be available to Andriod devices running version 2.2 and above and to help get the service off the ground one free song will be available for download everyday.
In an official post regarding the service Google had this to say:
The store offers more than 13 million tracks from artists on Universal Music Group, Sony Music Entertainment, EMI, and the global independent rights agency Merlin as well as over 1,000 prominent independent labels including Merge Records, Warp Records, Matador Records, XL Recordings and Naxos. We’ve also partnered with the world's largest digital distributors of independent music including IODA, INgrooves, The Orchard and Believe Digital.