http://www.billygreer.com/ Billy Greer Official site with biography, song samples, lyrics, audio interview, photo gallery and links page. http://www.classicrockrevisited.com/Interviews04/billy%20greer.htm Classic Rock Revisited: Billy Greer Interview with the Kansas and Seventh Key bassist by Clyde Bradley. http://www.metal-rules.com/interviews/BillyGreer-August2004.htm Metal-Rules: Billy Greer Interview with the Kansas and Seventh Key bassist by Anders Sandvall.