Microsoft quietly launched "Annual Zune Pass" on Zune.net. A Microsoft spokeperson cofirmed; "It went live yesterday in US, UK, France, Italy and Spain." "The monthly subscription is for $14.99 in US and €9.99 or £8.99 in European markets. Annual Zune Pass subscription is the same monthly offer, at a discounted price of 12 months of music for the price of 10 months." The change came on the same day that Microsoft released Windows Phone 7, which has Zune services built-in.
Previously, Microsoft only offered a monthly pass for $15, which lets you keep 10 songs of your choice. The annual option runs $150.
That works out to $12.50 per month, or as Microsoft puts it, 10 months for $15 and two months free. If you decide to keep 10 songs a month, assuming each song is $1, then you're paying $30 for access to Zune Marketplace for a year. In other words, if you were to buy 120 songs a year anyway, you would pay $2.50 a month for unlimited consumption of Microsoft's 10 million track music library.