Today through Friday, you can download a free song by Orianthi, who happens to grace the cover of the April 2013 issue of Guitar World. The song, "Filthy Blues," is from Orianthi's new album, Heaven In This Hell, which was released March 12 by Waterfront Records.

Here's a Guitar World video from the 2013 Winter NAMM Show, which took place January 24 to 27 in Anaheim, California. During the gear- and rain-filled weekend, we paid a visit to the gang at PRS to check out some new guitars. This video profiles the company's new Brent Mason Signature Model.

Paul Reed Smith and bassist Gary Grainger began collaborating on what would become Private Stock Gary Grainger basses a decade ago. Now, in 2013, the Maryland-based manufacturer is proud to announce the evolution of this line as they add two new basses to its Core product offering: the Grainger 4 and Grainger 5.