They later toured with Redding until his death in 1967, after which, they signed with Kenny Gamble and Leon Huff's Philadelphia International record label.
McFadden & Whitehead soon gained attention for their songwriting ability when their song "Back Stabbers", recorded by The O'Jays, went to No.
The duo wrote many songs for other Philadelphia International artists and had hits such as Harold Melvin & the Blue Notes' "Wake Up Everybody (Part 1)", "Bad Luck", The Intruders' "I’ll Always Love My Mama," and their own, "Ain't No Stoppin' Us Now" (#1 R&B) in 1979.
McFadden was diagnosed with liver and lung cancer in 2004, and died from the disease at his home in the Mount Airy section of Philadelphia on January 27, 2006, one day shy of his 57th birthday.
[5][6][7] In 2016, a federal appeals court ruled that the estates of both McFadden and Whitehead were allowed to retain control of the duo's song catalog.