VVVVVV had the best modern chiptune soundtrack ever, and this powermetal remix is probably the most epic treatment of the original source that could have happened.
The tracks fit perfectly into the original context of the game, with some amaaaazing new (Not originally VVVVVV) songs.
But don't buy it from here, get the album from Souleye's own website and give him your money directly (for more % of money support given)