3 ms·

Ah, that does make sense but it wasn't what I was originally replying to. You didn't say why we were losing 10% speed after refusing to fix our mistakes, and I

Ah, that does make sense but it wasn't what I was originally replying to. You didn't say why we were losing 10% speed after refusing to fix our mistakes, and I actually thought that this was supposed to be due to the software penalizing us for the mistakes when we could have got a higher speed overall if we'd corrected them ourselves. Slowing down during your deliberate practice to the point where you don't make many mistakes could well be optimal, and something I should probably do more of. Albeit it still isn't clear to me what we should do with the occasional mistake we make even while going slow, but I accept that you think we should ignore them.

jacquesm 4y ago
The basic idea is to lay down repetitions of the 'perfect' pattern to the point that you are no longer thinking about it and any mistake will mar that process, so it is better to slow down to the point where you are no longer making mistakes (or at least, very few, initially, and hopefully after practice so few that they no longer happen at all). For me, depending on the complexity of a given piece that can be anywhere from 5% to 20% or so of indicated tempo for the first times that I practice a piece. One of the hardest things to take into account when practicing slow is that you should still use the exact same fingerings as you would when playing fast because otherwise all of your practice is for nothing!