From the official site:
Jesse (Rock name - Bagpuss)
Jessie is learning the guitar and sings. She most enjoys Spanish classical. During the Rock School project, she learnt a few basic chords, plus something of the history of rock but most enjoyed doing something that was so different. She found Gene Simmons to be harsh, perhaps afraid to let his guard down but he softened up after a month of filming. Jessie also felt that the music industry is a lot harder to be in than one might think but she wouldn't want to be part of it.