Drupal 7: Create glossary with views, but sort it by a field other than the title?
===

I am trying to create a glossary view but the one that Views provides uses the first letter of the node's title. I need it to use the first letter of a field named Artist in my content type. I've tried making a new Contextual Filter and match it up with the one provided by the glossary view but the Glossary mode is not even an option, which I find to be very odd. Anyone have any ideas? :-/