Be sure to download the Scorch installer first, then quit your browser before begin its installation, and then re-launch your browser to get back to this page. (to make it easy, your web browser must be closed during the Scorch installation)
Some of violinist friends thought this wouldn't work for cello but it does! It's such a great little gem. Purchasing the online music saved cost and was very easy, and the quality good. I will do this again!