Tomorrow, March 14th, is Pi Day. While some will celebrate by eating lots of pie, or waking up at exactly 9:26:53 AM, Microsoft is paying homage to the mathematical constant with a deal that doubles as a play on the pi digits. For 24 hours tomorrow, you'll be able to buy a 12-month pass to Xbox Music for just $31.41.
A year-long pass for the service usually costs $99, which means the Pi Day price will save you almost $70. The offer is good for new subscriptions and renewals of existing subscriptions.
Microsoft started charging for the music streaming service at the end of last year, so if you gave up once the free ride was over, now might be a good time to reconsider.