The startup will be the streaming-music service for top music TV company Viacom, directly providing the tunes on MTV, CMT, and VH1 apps and websites.
Viacom's erstwhile music channel launches an app that will recognize the song playing around you and prime you with bios to read, videos to watch, and tickets or songs to buy.
To drive people to its MTV app, the Viacom network is encouraging Miley fans to tweet about the singer enough to unlock preview footage from an extended-length version of her documentary.
The pop star's performance at the award show yielded 4.5 million mentions and 306,100 tweets per minute.
The Video Music Awards netted more than 19 million social-media mentions last year, but this time the Viacom network is focusing on the quality and media side of the show's social media.
Xbox Live is the next platform after iOS to get the MTV app Viacom rolled out in June, but users must be both Xbox Live and pay-TV subscribers to access streams of full episodes.
After forces like YouTube hammered the final nail in the coffin of music-centered TV channels that actually played music, Viacom's channels resuscitate the notion -- at least for a few hours.
More than 30 years ago, MTV was Music Television, and on July 4 it will be again.
The companies' deal will bring "thousands of episodes" to Amazon's streaming service. Nick Jr. programming will also be made available.
HBO's chief says the cable heavyweight next year will provide a streaming-only subscription option for its fans -- no cable or satellite subscription needed.