For teenagers, Bach's music is usually boring, and it means exercise usually. For the more mature piano lovers, Bach's music is fairly musical and often spiritual. If some one can really plays Bach's P&F so beautifully and touching, then he/she is certainly a master of piano. Ordinary people may not notice the difference between a master and a student. However, the audition examiners would likely could see the difference, and yet the potential in the student. Just my silly thoughts.