Slow practice is easy in theory, but when you actually try to do it, it’s not that simple. You sit at the piano, you tell yourself you are going to go slow, and by the third measure you are speeding along. Your hands are ahead of you, the rhythm is sloppy, and you are back to your same old weak points. Slow practice isn’t just going slow through the whole piece; it’s a strategy of slowing down so you can see what your hands are doing, hear what you are playing, and pinpoint where your trouble spots are.
The first strategy is to think of slow practice as having its own rhythm. If your slow practice is all mushy and aimless, your mind will wander and your fingers won’t learn anything of value. Pick a tiny section, maybe just one measure, maybe only a few notes, and play it with a pulse. Count out loud, if you have to. Let your fingers place each note with intention, and pay attention to whether the sound is even from one note to the next. If you find that one finger is heavier or lighter than the others, that is useful information. You aren’t failing. You are finding out where you need more control.
The next pitfall is slowing your hands down but not your eyes. Sometimes I have watched a student look at the music, look at the keys, look at their hands, and then back at the music again, all in the space of two seconds. It’s as if the more frantically they look, the more carefully they will play. Actually, the opposite is usually true. The fix is straightforward, but challenging: you need to decide where you will look before you start playing the section. If you don’t know the notes yet, then look at the music. Then look at your hands only when you absolutely need to shift them. If you already know where your hand is positioned, then keep your eyes still and focus on your fingers playing. Steady eyes usually means a steadier rhythm.
The third pitfall of slow practice is practicing the starts and stops. Yes, you should stop and try again, but you shouldn’t be stopping every note unless something specifically goes wrong. Too many stops and starts will make the music sound disjointed and broken. Instead, try to play through a short section and complete it, and then think about it. Was your thumb smooth? Was your left hand late? Was your rhythm solid, or did you shorten the long note because you were worrying about the jump? These are more useful questions than did it feel good or did it feel bad.
You can have a great fifteen-minute practice session using this approach. Start with two minutes of playing simple five-finger patterns in each hand, evenly and gently. Then spend a few minutes working on one little section of music, playing each hand separately and listening to balance and rhythm. Then put your hands together and try it at a tempo where you can still hear what each hand is doing. If you start to get distracted, don’t try to play the whole thing again. Go back to two notes, take a breath, and find your clarity again. Use your last few minutes practicing your best version enough times that it starts to feel automatic, not accidental.
Finally, if a section is still not clean even when you slow down, it isn’t a tempo issue. It may be a fingering issue, a rhythm issue, or a hand position issue. Find the exact spot where it messes up. Play the note right before that spot and the note right after it, over and over in a little loop. Sometimes you only need to practice three or four notes to solve the problem. That little loop will be more helpful than playing the whole thing again several times, because you are finally targeting the problem instead of just playing around it. Slow practice starts to feel rewarding when you quit thinking of it as waiting and start thinking of it as examining. You can hear things you couldn’t hear at tempo. You can see where your hand is using motion efficiently and where it is wasting motion. And most importantly, you can start to feel confident that practice is leading you somewhere. A section that feels solid at a slow tempo has a foundation. When you finally push it up to tempo, it won’t collapse.