Charlie Foxx began singing with a gospel choir as a child in the early 1950s, and was later joined by his sister Inez.
In early 1963, the pair introduced themselves to Henry 'Juggy' Murray, the owner of Sue Records, and sang him their arrangement of the traditional lullaby "Hush, Little Baby".
The song, re-titled "Mockingbird," was released on Sue's subsidiary label Symbol Records in June 1963.
They toured extensively in Europe and their music played a key role in the development of the Northern soul movement, in which scene they had the very popular "Tightrope" single.
[citation needed] Inez Foxx married songwriter and producer Luther Dixon in the late 1960s.