How to Practise With a Metronome (Without Fighting It)
Slow practice that works, subdivisions that expose drift, muted beats as a test of your internal time, and the millisecond maths behind delay settings.
Most people own a metronome and use it badly. Switch it on, set the tempo printed at the top of the page, start playing, lose the beat somewhere in bar three, blame the metronome. I did exactly that for years. The click isn’t there to drag you up to speed. It’s there to tell you the truth about where you already are, which is a different and much less flattering job. The Online Metronome does the part a mechanical one can’t: it lets you silence individual beats and see the millisecond figures behind the tempo.
Slow isn’t a warm-up, it’s the work
Find the fastest tempo at which you can play the passage cleanly five times running. Not four. Then drop 10 to 15 BPM below that and stay there. Work up in steps of 4 or 5, and when a step fails twice in a session, go back down one and try it again tomorrow.
This feels unbearably slow, because it is slow. It’s also the only method I’ve seen reliably unstick a passage that has been stuck for weeks. Grinding away at the tempo you can’t play does one thing extremely well: it rehearses the mistake until it’s permanent.
Subdivisions show you where you drift
A click on every beat reports on four moments per bar. Everything between those moments is unsupervised, and that gap is where rushing lives. Switch the subdivision to eighths and you’ll often hear immediately that you’re arriving early on the second half of each beat.
Triplets are the uncomfortable setting. If you’ve only ever practised against straight subdivisions, a triplet click will reveal that your swing is approximate. Twenty minutes of that teaches more than an hour of eighths.
Mute beats, and find out what you actually have
Here’s the test. Set 4/4, then click beats 2, 3 and 4 until each one reads silent. Now you get one click per bar, on the downbeat, and everything in between is yours to carry.
If the next downbeat lands where you expected it, your sense of time is internal. If it shows up somewhere you weren’t ready for, it never was internal and you were simply tracking the click. Nearly everyone fails this the first time. It’s also the fastest way to find out that your reliable time was borrowed. Record a take while you do it (voice recorder) and the verdict gets harder to argue with.
The arithmetic behind the click
A tempo is just a division: 60000 divided by BPM gives you the length of a quarter note in milliseconds. At 120 BPM that’s 500 ms, so an eighth is 250 and a sixteenth is 125.
Producers do this sum constantly, because it’s also how you set a delay. A dotted eighth at 120 BPM is 375 ms, and that figure is the guitar sound on “Where the Streets Have No Name” — the shimmer is a delay locked to the dotted eighth, not fast picking. The table on the tool page recalculates every note value as you move the tempo, so the number goes straight into a plugin.
A note about 6/8
6/8 at 120 does not mean 120 quarter notes. Here, as in almost every digital metronome, BPM means clicks per minute, so you get 120 eighths in groups of six with a lighter accent opening each group of three. If your score says dotted quarter = 60, set the metronome to 180. This trips up a lot of people, who then decide the metronome is broken.
Beethoven, as it happens, was the first major composer to write metronome marks into his scores, and several of them are so fast that pianists have spent two centuries arguing about whether his Maelzel device was miscalibrated or whether he simply meant it.
Pick a tempo, mute a few beats, and see how long you last: Online Metronome.