MFSB achieved their widest recognition by crafting the theme for Soul Train, serving as the foremost instrumental ensemble in Philadelphia soul through their extensive work on Kenny Gamble and Leon Huff productions alongside regular independent releases across the 1970s. The acronym stood for Mother Father Sister Brother, and although the unit officially assembled in 1971 as the resident band at Gamble and Huff’s Sigma Sound studios, several key members had already collaborated since 1968. Guitarists Norman Harris and Bobby Eli, bassist Ronnie Baker, and drummer Earl Young scored an uncredited dance success with “The Horse,” the instrumental B-side to Cliff Nobles’ “Love Is All Right.” As the Horse craze took hold in Philadelphia, the musicians also accompanied the Fantastic Johnny C and, performing as the James Boys, Jesse James, while releasing singles under the names Music Makers and Family.
The emergence of the richly orchestrated Philly soul style at the start of the 1970s generated abundant session opportunities at Gamble and Huff’s Philadelphia International label. Harris, Eli, Baker, and Young became central figures in the company’s house band; additional key contributors included guitarists Roland Chambers and James Herb Smith, bassist Larry Moore, drummers and percussionists Karl Chambers, Miguel Fuentes, Quinton Joseph, and Larry Washington, saxophonist Zach Zachary, organist and keyboardist Lenny Pakula, vibraphonist Vince Montana, and an ever-changing roster of strings and horns frequently led by Don Renaldo. MFSB supplied the instrumental foundation for numerous Philadelphia International successes, most notably those by the O’Jays and Harold Melvin & the Blue Notes, as well as the Stylistics and the Spinners. The group launched its own recording career in 1973 with a self-titled debut filled with lengthy, occasionally jazz-inflected soul instrumentals.
Later that year, Soul Train host Don Cornelius asked Gamble to compose a fresh theme for the newly syndicated program. Gamble assembled MFSB with arranger Bobby Martin and the vocal group the Three Degrees, resulting in a track that resonated strongly upon its television debut. Gamble persuaded Cornelius to issue the recording commercially, and its early 1974 release as “T.S.O.P.” (“The Sound of Philadelphia”) climbed to number one on both the pop and R&B charts while earning a Grammy for Best R&B Instrumental. The accompanying album Love Is the Message reached the pop Top Ten, earned gold certification, and topped the R&B album chart; its title track later surfaced as an underground favorite in the New York disco scene. MFSB’s 1975 follow-up, Universal Love, yielded the R&B hit “T.L.C. (Tender Lovin’ Care)” and edged the band deeper into disco with cuts such as “Sexy” and “Let’s Go Disco.”
The ensemble completed five additional Philadelphia International albums through the rest of the decade, evolving into a dedicated disco act after teaming extensively with arranger and producer Dexter Wansel beginning in 1978. The previous year they contributed a version of the Nite-Liters’ “K-Jee” to the blockbuster Saturday Night Fever soundtrack, yet commercial fortunes waned toward the decade’s close. The title track from their final album, 1980’s Mysteries of the World, charted in the U.K., but with both Philly soul and disco past their peak the group disbanded in 1981.
