Amazon now launches a new Music service-Music HD. Amazon Music HD offers the highest quality streaming HD (High Definition) audio for customers to get a new way to elevate more than 50 million songs’ sound. Amazon Music HD now starts at $12.99/month only for new subscribers, and with a 3-months free trial.  Current Amazon Music Unlimited subscribers can upgrade to Amazon Music HD for 3-months at no additional cost. Get 3-months of Amazon Music HD free here >>>