Hoq to convince mt mum to let me to go to concert??

I REALLY wanna go to the Boa concert and theyre coming to england around June, but im doing my gcses! ive made a sldieshow to show her, havent sown her yet but what other reeasons are there to let mw go, havent been to one beforei2bviwhihuriviofvifvipeqhfbouguyrg84ghboeruyoryebvoybq