According to his youtube page Paul Cooke was the first drummer for Sade and help write all of the songs on the 1984 Diamond Life album.  He recently published some rare footage from his time with the band.  Below is one of the amazing videos he has on his site. 

Mr Cooke indtroduces the video as follows:

This is a my last gig with the band after we recorded the album Diamond Life, note the perfect time keeping but not so perfect vocal from a fledgling singer. I love the guy whistling in the background:) peace Paul Cooke

I highly reccomend you check out the rest of video his collection.