Last May, the two contrasting sounds of Björk and Dirty Projectors performed together at a benefit for Housing Works in Manahattan. The event, organized and put on by Stereogum writer, Brandon Stosuy, debuted a twenty-minute, seven song collaborative set originally named Mount Wittenberg Orca.

Although we have not heard of the two working together on anything new since the charity event, this April, Björk and Dirty Projectors entered Brooklyn's Rare Book Room studio and recorded an updated version of Mount Wittenberg Orca. It will be self-released digitally on June 30 with money raised going to the National Geographic Society.

The songs, all written by DP leader Dave Longstreth, feature environmental themes where Björk fittingly mimicks the sounds of whales and dolphins among other things. Naturally, all of the profit will be donated to the project of creating international marine protected areas.

Click here to pre-order all seven songs for $7!You can purchase all seven songs for $7. Check out the tracklist below.