Born on 14 April 1978, in Vénissieux, Louisy-Joseph at age 15 to pursue a musical career while continuing hotel studies in Lyon.

Louisy-Joseph started preparing for a debut solo album[4] after a friend advised her to contact Pascal Obispo who agreed to produce her album at his Atlético Music studios, and arranged for a contract with Warner Music France with contributions by John Mamann and Olivier Reine in a soul, reggae and acoustic style far away from the pop style of L5.

Louisy-Joseph's debut solo album La saison des amours was released on 14 April 2008, the day she turned 30.

Her debut solo single "Assis par terre", written by Lionel Florence, was released on 26 May 2008 and hit Top 3 followed by a concert at the Zénith de Nantes, on the occasion of the NRJ Music Tour.

In 2008, she was an opening act for Christophe Maé and performed a solo concert with William Baldé at Élysée Montmartre, on 23 June 2008.