I have always wondered if there is a recording of a solo piano song that actually has mistakes.
I'd venture to say that most recordings of a piece of the caliber of La Campanella has at least one mistake, i.e a wrong note. The question is, do you really hear it? Most often not. Anyway, often, only those who are extremely familiar with the piece may hear it. The second question is: Does it matter? No. In most cases, mistakes are absolutely tolerated. Modern recordings are often patched to remove mistakes, but many performers or editors don't care about one or more mistakes. If everything else is great, a couple of wrong notes are not the end of the world.
Does it matter?
Mistakes during a performance?I consider everything Horowitz plays a mistake!