Florence Ballard Diana Ross, then going by "Diane". Betty McGlown completed the original lineup and Jenkins named them as "The Primettes". The group performed at talent showcases and at school parties before auditioning for Motown Records in 1960. Berry Gordy, head of Motown, advised the group to graduate from high school before auditioning again. Ballard eventually dropped out of high school though her groupmates graduated. In 1960, Ballard was raped at knifepoint by local high-school basketball player Reggie Harding after leaving a sock hop at Detroit's Graystone Ballroom (she had attended with her brother, but they accidentally lost track of each other).
Girl group an environment of entertainment in which the appearance of the girl group was not unfriendly, and musical forms like a cappella and barbershop quartet singing provided inspiration for the structure of the songs and types of harmonies sung by initial girl groups. Importantly, the first successful girl groups of this era were typically white, but capitalized on using music such as ragtime that had originated in the African American community. This era was also advantageous to the beginnings of girl group music because of the newfound prevalence of the radio as well, which allowed this style of music to spread.