Switched to your sisters body

Elina and Lily are two sisters who are way different , Elina loves discovering many things and is very curious about the world , she learns extremely well and gets the highest grade and here best friend is Linda , a curiou girl just like Elina whereas Lily has a passion for music , she has her own band called the bad girls and they perform and win every school competition alongside Lily , is her best friend Gean who helps her and motivates her , Lily is the "cool "girl in highschool she's always surrounded with many people . When the most coolest , talented,boy in the school , Geremy , has started noticing Elina , they soon become great friends , instead of "boyfriend and girlfriend " . But on the day of the national music tournament and the National Math Olympia,Lily and Elina get switched by the "Ball Of Mysterious Generations " , an ancient object which was discovered by Elina few days ago , Elina is in Lily's body and Lily is in Elina's body . How will they be able to play each others roles ? Will they ever be able to return to their own body's in time or will they be stuck in each others bodys ?