If you still haven't heard about Eva Cassidy and more importantly haven't heard her brilliant singing you've been missing something unique and hauntingly beautiful.
Eva Marie Cassidy, born February 2, 1963 in Washington, DC was an American vocalist described by the British newspaper The Guardian as "one of the greatest voices of her generation." She had a diverse repertoire of jazz, blues, folk, gospel and pop. Cassidy remained virtually unknown outside of her native Washington, DC, when she died of melanoma on November 2, 1996. However, her posthumously released recordings have since sold in excess of four million copies, and in early 2001 the compilation album Songbird reached #1 on the UK album charts. (Slightly modified paragraph from the Eva Cassidy article on the English Wikipedia. Credits)
Please watch this three-part documentary about Eva Cassidy that was broadcast by ABC in 2001. Sorry, but youtube doesn't allow publishing this material inline here so you have to follow the links to youtube:
A couple of links to sites of interest concerning Eva Cassidy and her songs: