Two black music greats died this week. To name but some of the songs they co-wrote with their partners: ‘Ain't No Mountain High Enough’, ‘Ain't Nothing Like the Real Thing’, ‘California Soul’, ‘Don’t Cost You Nothing’, ‘Hound Dog’, ‘I’m Every Woman’, ‘Is That All There Is?’, ‘It Seems To Hang On’, ‘Jailhouse Rock’, ‘Kansas City’, ‘On Broadway’, ‘Reach Out and Touch (Somebody's Hand)’, ‘Spanish Harlem’, ‘Stand By Me’, ‘Surrender’, ‘There Goes My Baby’, ‘Yakety Yak’, ‘You're All I Need To Get By’