Valve has released the third and final batch of their Songs to Test By, or the excellent soundtrack of Portal 2. To date, Volumes One and Two have been available for download via the game's website, and Valve reports that over two million people downloaded the albums.
The third volume of Songs to Test By contains the remainder of the songs left out of the previous albums and with its release, comes the announcement that "Peer Review," the first Portal 2 DLC, is set for release next Wednesday.
So there's that. Two awesome bits of news about Portal 2, and they're both absolutely free (except the latter, which requires that you own the game).
You can download all three albums from Valve's website here. Stop reading this and go listen to it.
