logoGoogle is to unveil a music streaming service at today’s I/O event, rumours suggest.

Universal Music, Warner Music Group and Sony are said to be on board according to The Verge, thus granting the service access to music from some of the worlds biggest artists.

Google launched a cloud-based music player and music store – Google Play Music – back in 2011.

Interestingly, sources say that a free-tier option will not be offered, potentially making it a less attractive proposition than Spotify, Rdio and other services offering free ad-supported access; and two separate versions will be on offer: one powered by YouTube and one powered by Google Play Music.

Google Apps Rumours google io 2013 google play music spotify