On my daily search for Robert Wyatt stuff on the net, I ended up in the I-Tunes store, where I for some reason got a hit on the record "Yael Naïm & David Donatien". I can't see that RW is on this record, but Yael Naïm sings on several tracks on ONJ's Wyatt tribute.
I shopped a couple of tunes, one of them a beautiful version of Britney Spears' "Toxic". A vocalist who can do a Britney cover like that, is welcome to sing Wyatt for me. Listen to some tracks on MySpace, and you may have heard her in a commercial too.