The Hillarys resident was named the winner of the City of Joondalup event after performing to 150 youngsters at the final at Arena Joondalup last month.
Each artist performed a 25-minute set and were judged on their musicianship, professionalism, originality, stage presence and entertainment value.
Judges said Shayla was a well-deserving winner.
‘Mixing complex classical material with electronic-pop and dubstep is brave, pioneering and refreshingly original,’ they said.
The St Mark’s Anglican Community School student said it was an amazing experience to win, given the strength of her competition.
‘All of the other acts were really good but I enjoy performing and having my family and friends come down to support me was a big help,’ she said.