She got her first guitar when she was in the first year in boarding at "Namık Sözeri Highschool" of Bursa. She got acoustic lessons. During her second year, she hired a studio with her friends and formed the group Pegasus. The group had their first stage appearance during a rock festival in Bursa, in 1987. After a while, Pegasus disbanded. In 1988, Şebnem formed Volvox with four friends of her that they named after the microorganism known as volvox, which they encountered in a biology lesson.