(im not sure how true this is cuz i live in Australia, however).... On the 9th July,the tv show "Sex In The City" in the US will feature De La Soul performing 2 tracks from their new CD "Mosaic Thump", one of the songs being "All Good?" featuring Chaka Khan. So (maybe) look for Chaka on the show then (or at least hear her vocals).
Can any US viewers confirm this info?