In May, rumors of Facebook’s plans to launch a new music service surfaced. Their first partner was said to be Spotify, which had recently launched in the U.S. Facebook was subject to more rumors in late August when it had allegedly partnered with Spotify, MOG and Rdio to unveil the new music service at the f8 Developer Conference.

At the f8 conference, which took place on Thursday, Facebook launched a number of new partnerships with the release of their new Open Graph – including partnerships with the music services Spotify, Turntable.fm, Rhapsody, Slacker Radio, MOG and Rdio. The new Open Graph allows users to share their experiences without repeatedly requiring permission. For example, songs you are listening to will automatically post to a new Music Dashboard — no questions asked.

Facebook integrated several major music services into its platform. The platform allows for users to document songs as they’re listening to them and share their taste with all of their Facebook friends. Songs that are currently being listened to on one of the integrated services will appear in your new Ticker and Timeline, so you can still share your experience with your family and friends, but it won’t spam their News Feeds. It also allows users free, unlimited listening in some cases. The following services are now integrated into the social network:

Spotify

Spotify is giving users free, unlimited service through their Facebook partnership. When a user that has Spotify listens to a song, it will show up on their new Music Dashboard with a small play button next to it. That user’s friends can now listen to that track, completely free of charge, from the News Ticker or Dashboard. Users who have Spotify accounts can also send playlists to their friends, bringing the art of the mix tape back into the digital world. The best part is, Spotify is no longer invite only. CEO, Daniel Ek, told TechCrunch that the service is now open to the public and free for the first 6 months.

Rhapsody

With their Facebook partnership, Rhapsody is offering users a free 30-day trial. The music-streaming service is allowing users to take Rhapsody anywhere and users can listen on over 70 different devices including Android and iPhone devices. Users can also sample from Rhapsody’s programmed and artist radio, read original editorial content and try out Rhapsody’s new social features which help users share songs, artists and playlists on Twitter, Facebook and through email. The free trial has no advertisements so users can fully enjoy the experience of having Rhapsody in the palm of their hand.

Rhapsody currently has a catalog of over 13 million tracks and all users who connect to Facebook will be able to document what they’re listening to. Tracks will automatically post to your Ticker and Timeline.

Slacker Radio

Slacker Radio is allowing users to sync their accounts with Facebook, so tracks streamed from the service will be published to their Music Dashboard. Slacker Radio is also running an exclusive Facebook contest. Their promotion called the “100 Days to Get Personal” will give away 1 prize a day for 100 days to users who have added Slacker Radio to their Facebook Timeline. In addition, everyone who enters the contest will receive 1 month of Slacker Premium Radio for free.

The 100 Days to Get Personal contest has some amazing prizes. Prizes include meet and greets with artists like Katy Perry and Coldplay, SONY 3D HD TVs, BlackBerry Playbooks, a New Year’s Eve trip to Las Vegas and 2 trips to New York with ABC News — one as a Good Morning America VIP and one to tour ABC World News with Diane Sawyer.

MOG

MOG has integrated their service into Facebook allowing free listeners to gain additional access to music by creating and sharing playlists. Previously, free users would have to refill a virtual gas tank by performing social tasks. If they played enough music their gas tank would run out and they wouldn’t be able to listen until it was refilled. Mog’s Facebook integration gives users a new outlet to refill their gas tank.

With the partnership, MOG launched a slick new interface and new features like Facebook-specific personal recommendations. Once connected to Facebook, the service will curate recommendations based on listening habits and Likes of a listener and their Facebook friends.

Rdio

Users who sync their Rdio account with Facebook will have the songs they are listening to automatically post to their Tickers and Timelines. If you’re not a user, clicking on a song that was played with Rdio will automatically create an account, if permission is granted. These new accounts will be given a free trial of Rdio Unlimited.

The new integrations make Facebook far friendlier to music lovers as the social network closes in on the music-sharing market. Will services like Last.fm or Myspace’s new, but unreleased, incarnation be able to hold up?