The intention was to aim towards "a more mature niche in the pop market" than what was becoming the norm for vocal groups at the time. The line-up was chosen with the inclusion of a fifth member called Paula O'Neill.
The aim was to move towards a more specialized niche within the pop market, differentiating themselves from the prevailing styles of vocal groups at the time. The lineup was expanded with the inclusion of Paula O'Neill as a fifth member.