Jaffar, Have you ever read anything by Paul Vickers? He did quite a bit of work on using music to debug. I've written a paper or two on the topic as well (Coincidentally, I have a music degree, so the idea is pretty interesting to me), although Vickers is the big name in this area. Here's a link to his site if you get bored one afternoon: http://computing.unn.ac.uk/staff/cgpv1/publicat.htm Andreas __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind