In Korea, many students who want to apply to a university to study piano go to great lengths to be accepted. There will be hundreds of students applying for half a dozen open seats so the competition is great. The audition repertoire is fixed - everyone plays the same thing - so they know well beforehand what is required. Auditions last a couple of minutes but one mistake and they are asked to stop and leave. If you exceed the time limit (e.g. 2 minutes for Chopin's Op. 10-4), you'll be asked to stop and leave or be automatically disqualified. Some pianists will practice incessantly until their fingers bleed just to get the etude right. Others will attach weights to their fingers in the hope of strengthening their fingers so that they can use that strength to play faster. Does it work? My friend who was accepted and graduated said that "they are crazy." She never did such crazy things. In fact, she never even had a piano teacher until a couple of months before the audition. She auditioned and was accepted in spite of never having done anything like that. She even won the school's piano competitions and the concerto competition a couple of times and got to perform with the school's orchestra. That's kind of impressive. And if your preconceived notions of piano playing include finger strengthening, stamina, endurance, etc, then that may seem astounding that she accomplished so much in spite of never having even done anything ridiculous like finger weights.