Who wrote Sailing?

There is more than one song called "Sailing" but probably the biggest hit was by Christopher Cross in 1980. It was a number-one single. The song was a phenomenal success, winning GRAMMY Awards for Song of the Year, Arrangement of the Year, and helping Cross win the Best New Artist award. The album it came from won Best Album of the Year. VH1 named this the greatest "soft rock" music song of all time.