Rapping and Homeworks..

i got rapping perfomances wanna perform... i got homeworks to do.... i wanna quit at rapping BUT teacher say NO... wth.... i need to hafal the lyrics and the music... i need to complete my homework... no TIME la.... i listen to music then someone will say i everytime listen to music.... i do my homework then my rapping lyrics ????? how???? can anyone teach me ah???? argh.....