 Their rendition of Caravan from an album from the mid-70s that was never released initially. It was recorded and then shelved and then resurfaced, I believe, in the 2000s. Tribute to the Duke is the name of the album. Herb Jeffries and Lorendo Almeida. Before that, Dinah Washington with Quincy Jones and his orchestra with their rendition from the album The Swingin' Miss D.