This year just keeps getting sadder in the world of music, and this one really hits us hard. Legendary Philadelphia soul singer, Billy Paul, has died at age 81. Paul actively performed for a half century, but was best known for this chart-topping 1972 hit, "Me and Mrs. Jones." It was without a doubt one of the most lauded soul songs ever -- after overcoming some inital controversy -- and Paul made it his own with an expressive delivery over pristine Gamble & Huff production.