A news post of the sad news regarding the passing on of Sir Mack Rice reported in the forums by member @David Meikle
Details can be read via the Detroit Free Press News item written by Brian McCollum, Detroit Free Press Pop Music Critic via the link following the preview clip below
Detroit soul stalwart Sir Mack Rice, who wrote “Mustang Sally,” “Respect Yourself” and other enduring R&B hits, died Monday in metro Detroit of complications from Alzheimer's disease. He was 82.
Rice and his family moved to Detroit in 1950 and — following an Army stint in Germany — the aspiring singer linked up with the Falcons, a talent-loaded group featuring Pickett, Joe Stubbs and Eddie Floyd. With the Falcons' dissolution in the mid-'60s, Rice devoted his energy to songwriting and a solo singing career — earning his "Sir" honorific from fellow Detroit R&B figure Andre Williams
Also the forum thread passing on the news above can be read here