With this talk of possible Sergio collaborators, I'd much prefer to hear Sergio with Swing Out Sister and/or Basia rather than Sade. I love a lot of Sade's stuff, but it's rather monochromatic (one of my vocalists used to joke that Sade made a career out of a minor 9th chord). I've been listening to a lot of Swing Out Sister's rarer Japanese releases the last few days and the Sergio influence is all-pervasive. People talk a lot about the Bacharach or Webb touch to their tunes, but what I really hear is...Sergio!! (Of course, I hear Sergio in just about everything, save maybe Conway Twitty ). Basia's beautiful timbre would also be a great match with any Sergio tune, IMHO.