Harmonix will no longer be releasing DLC songs for its Rock Band series, and a few songs will soon be disappearing from the existing library because of expiring licensing deals.

In a post on the game's official Facebook page, Harmonix said three songs, released on Nov. 20, 2007 in Metallica Pack 01, have already been pulled: "Ride The Lightning," "And Justice For All," and "Blackened." If you already have those tracks, you aren't affected, but until the music team can acquire a new license, the songs will be unavailable until further notice. If other song licenses cannot be extended before they expire, those songs could be pulled as well, Harmonix said, adding that term limits on music licenses is a common practice.

The company promised to give advance notice if and when more songs would be pulled, and will update fans on relicensing efforts quarterly.