baron became one of the many girl group/girl sound singers of the early 1960s. baron was not a member of a group; her producers would hire "pay for hire" backup groups for her recordings. this "sound" as it is referred to had much to do with phil spector, one of its major creators; spector produced recordings of this genre prolifically. the groups were composed of young adult or teenage girls, each with a lead singer and any number of back up singers.