Walter plays a lot of great music on Guild guitars (Starfires). Until another great Guild player, Richie Havens, stopped touring about a year ago, Walter was his accompanist along with Stephanie Winters.
Short clip I linked to from his website:
http://youtu.be/x0UyGyTJLmY
Short clip I linked to from his website:
http://youtu.be/x0UyGyTJLmY