Originally the backing band for Cliff Nobles & Co., MFSB (short for "Mother, Father, Sister, Brother", although schoolyard rumours would have had this stand for "Mother Fucking Son of a Bitch" or, in Northern Soul circles in England it stood for "Music For Soul Brothers") were a loose conglomeration of studio musicians who provided backing tracks for dozens of seminal Philadelphia soul recordings in the 1970s, and later released successful songs and albums as a standalone recording act.
These are photos from concerts where MFSB played, so they may be of other bands that played the concert as well.
The Temptations / Brass Construction / Impact / MFSB Aug 19 - 22, 1976 Owings Mills, Maryland, United States Uploaded by Zimtrim
MFSB / billy paul Mar 12, 1976 Upper Darby, Pennsylvania, United States Uploaded by Zimtrim
Harold Melvin & the Bluenotes / MFSB / billy paul Jan 2, 1976 Philadelphia, Pennsylvania, United States Uploaded by Zimtrim