This line of t-shirts was originally released about 4 years ago in the Torso Pants section of T-Shirt Hell. Actually, if memory serves me right, Torso Pants had its own website.
At that time Guitar Hero was very big. I don’t know now but I never played it anyway.
I’m guessing that T-Shirt Hell has decided that they are like classics already and has brought them back to try to make some easy cash.