If you started to play the guitar anytime after the late 1940s, you probably encountered the guitar instruction books of the late Mel Bay. Bay started his life in the tiny town of Bunker, Missouri and over the next eight decades he created a vast music instruction empire that included hundreds of publications. This particular website happens to lead to Mel Bay's Creative Keyboard, which is a monthly online magazine that explores various aspects of piano music. Of course, the site is used to promote various Mel Bay products, but there's a great deal of free content here, including articles titled "How to Compose a New Song" and "African Roots of Jazz". The articles are all authored by accomplished musicians, and visitors can also browse through the Creative Keyboard archive, which goes back to September 1999.