Isis was born in 2000 in the parent’s house-workshop close to Budapest.
At 3 years old she began the training on the piano with its mother, Arielle Gáll-Bidoul, pianist.
At 5 years, in a completely unexpected way, she asks to learn harp; in autumn 2005, she began to learn harp in Budapest with the Belgian harpist Heleen Vandeputte.
She likes to develop melodies and asks its mother to write them.
Since the summer 2006, it has its own instrument, a Celtic harp Camac.

She composes spontaneously, as “speaking the music”, as she speaks French or Hungarian.
She often composes aabout the sculptures of her dad (Gregor Gáll) or the paintings of her grandmother (Danielle Sablon).

Since 2008, she learn harp with the Hungarian harpist Maria Lévai.

Since September 2006, Isis is invited to play in public for various events, her mother accompanying with the piano, .