I haven't played with this recently and don't have the time to check for sure, but I believe this should work:
{"type": "Artist",
"right_plus": "last name",
"sort": {"right": "last name"}
}
(And technically, if Artist cards are the only ones with "+last name" cards on them, you don't need the "type": "Artist")
Works, thanks much!!
--Philipp.....2013-03-18 08:06:55 +0000
Nice!
--Ethan McCutchen.....2013-03-20 02:55:06 +0000