On Tue, Apr 8, 2014 at 1:43 AM, martin <martin.drautzburg@web.de> wrote:BTW: I named the StringIndexes E6 | A | D | G | B | E1 which reflects the way a guitar is tuned. Way cool.Nice :)This n-tuple as Array trick is something I missed. Thanks, Karl. Do you know where it's been used?