© Copyright 2005-2015 by Mark Sandborn and Virtuoso Music International
International Copyright Secured
Patent - US6930235B2
Virtuoso 3.0 is a Trademark of Mark Sandborn and Virtuoso Music International
All rights reserved. Except as permitted under the United States Copyright Act, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without prior written permission from Mark Sandborn. Some of the information and diagrams on this website are patented material.