Harps are known from the earliest period of written history, but the fringed robe and close-fitting cap of this harpist are typical for the early second millennium B.C. in Mesopotamia. Clay plaques from this period depict musicians playing a variety of stringed, percussion, and wind instruments. The casting of plaques was a simple and inexpensive way to produce relief images, since numerous plaques could be made from a single mold.