This Contribution is one I’m thrilled to showcase here on my blog. 3rdFloorSound’s The Theory is a terrific set of Music Theory learning tools in a huge refill. So this is not a refill with sound patches or samples. Rather, this is a refill which gives you a whole music theory master class in a download, and then some. Here, I’ll pick it apart and show you what you can do with the files, how to use them, and sing nothing but praises for it, because like many people who use Reason, I can definitely use all the help I can get when it comes to music theory.