Erik Bosgraff has a 3-CD set of music by Jacob van Eyck. Van Eyck lived in the first half of the 1500's and was a blind musician travelling from city to city playing. Most of his works consist of a melody followed by numerous variations on the theme.
http://www.youtube.com/watch?v=NSe6vhox6bg&feature=related<Added>Van Eyck lived in the first half of the 1600's NOT the 1500's, sorry.
