Kenneth Gamble, Leon Huff, and Thom Bell might have been The Mighty Three, but dozens of musicians joined them in shaping The Sound of Philadelphia. That triumvirate's lush, lithe productions were brought to life by the loose aggregation of players known as MFSB, or the house band at Sigma Sound Studios. These are the same musicians who went on to form The Salsoul Orchestra under the baton of Vincent Montana, Jr., including Norman Harris, Ronnie Baker, Bobby Eli, Ron Kersey, Lenny Pakula,