Several songs are to be taken down from the Rock Band DLC store due to re-licensing issues, developer Harmonix has announced. Included in this list are the songs “B.Y.O.B” and “Toxicity” made famous by the band System of a Down.

A Harmonix developer posted the news on the official Rock Band forums, along with a list of seven songs which would be pulled from the Rock Band DLC store due to re-licensing issues. According to the announcement, the tracks will be available for purchase up until December 30 this year.

The post stated that due to “first party schedules”, it was “very likely that these tracks will be pulled earlier than scheduled.” The announcement also notes that users who have already downloaded the songs should not experience any changes.

This would not mark the first time songs have been pulled from the store due to expired licenses. Earlier this year, Harmonix took down three Metallica songs for similar reasons.

The final downloadable track for Harmonix’s Rock Band DLC store, “American Pie” by Don McLean, was released on April 2. In total, the store has seen over 4,000 tracks released across 275 consecutive weeks..