This move follows the company's similar spinoff of Prime Video, which is available for $11 a month, and appears to be an effort by Amazon to diversify its subscription structure beyond Prime's single annual fee. What's more, this service will exist separately from Amazon's current Prime music catalog

Though Amazon is already tardy to the streaming music party, the company could well steal a number of subscribers from both Apple and Spotify. Heck, Pandora's shares have already dropped nearly 3 percent since this story first broke. Plus, the new Amazon service is expected to be tightly marketed alongside the company's Echo speaker, which has been a breakout star for the company. The synergy between an Alexa-enabled Echo speaker and a streaming music service unencumbered by Prime's hulking per year cost could prove a potent combination. It will be interesting to see how Google, which already offers an extensive streaming catalog and is currently working on an Echo of its own, will respond.