I'll tell you about one of my friends. She has started piano when she was 4-years old. Now she's 13 years old.She goes in 8-th grade. She plays this program :Liszt, concert etude "La Leggierezza"Bach, Prelude and Fugue E-minorMozart, Fantasia in C-minor (K.475)Chopin, Ballade no.4For a year she will play Chopin's E-minor concerto (no.1)(based on the program)Can she be a concert pianist?