How to practise a difficult passage

Why most practice stalls

The usual pattern is to play the whole piece at close to full speed, stumble in the same place, go back to the start, and repeat. Every stumble is practised too, so the mistake gets better rehearsed than the music. Research on how musicians practise points the other way. In a well-known study of piano students (Duke, Simmons and Cash, 2009), the best final performances did not come from those who practised longest, but from those who stopped at errors, worked out exactly where they happened, slowed down and repeated the passage until it was correct several times in a row.

Three principles follow:

• Accuracy first, speed second. Speed is a by-product of repeated accurate playing.
• Work on the problem, not the piece. Isolate the bars that go wrong and spend your time there.
• Know what correct sounds like. You cannot fix what you cannot hear.

Step 1: listen before you play

Hear the passage first, ideally several times, while following the notation. You are learning the shape of the phrase, where the strong beats fall and how the rhythm feels, before your hands have a chance to learn anything wrong. A recording works if you have one; if not, a score player can play the passage for you at a slow tempo.

Step 2: find the exact problem and chunk it

Play through once and mark precisely where it goes wrong — not "page two", but "the shift into bar 34" or "beats 3–4 of bar 12". Then cut the passage into chunks of one or two bars, or even a single beat across a bar line. Small chunks are easier to hold in short-term memory and let you get many correct repetitions in a few minutes.

Always include the note after the chunk. Many errors happen at the join between groups, so practise "chunk plus one" and overlap neighbouring chunks.

Step 3: slow it right down

Choose a tempo at which you can play the chunk correctly three times in a row with good tone and relaxed hands. For a genuinely hard passage that is often 50–60% of the target tempo, sometimes less. If you make a mistake, the tempo is too fast — go slower. Slow practice should feel almost boring; that is how you know your brain is getting a clean signal.

Use a metronome. Without one, slow practice quietly speeds up at the easy notes and slows at the hard ones, which bakes the unevenness in.

Step 4: count aloud

Many "technique" problems are really rhythm problems. Count the subdivisions out loud while you play slowly — "1 e & a" for sixteenths, "1-trip-let" for triplets — so every note has a place. Our guide to counting rhythms covers every common pattern.

Step 5: loop it

Repeat the chunk in a loop, without stopping between repetitions, keeping the beat going. Looping trains the passage as continuous music and removes the habit of pausing before the hard bit. Once each chunk is secure, join two chunks together and loop the longer section.

Step 6: raise the tempo in steps

When the chunk is correct three times in a row, raise the tempo by a small, fixed step. A practical ladder:

If you hit a wall at one step, drop back two steps for a few repetitions, then try again. Progress is rarely linear; a passage that sticks at 80% today often goes through tomorrow after a night's sleep.

Vary the practice

Once the notes are reliable, change things up: practise in dotted rhythms (long-short, then short-long), start from different notes within the passage, or play it with different dynamics. Mixing up how you practise makes the result more robust than repeating it identically every time.

Step 7: record yourself and check intonation

You hear yourself differently while playing. Record the passage on your phone and listen back with the score in front of you: are the rhythms even, is the tone consistent, do the shifts land in tune? On instruments where you make the pitch yourself — violin and other strings, the voice, fretless instruments like the oud, or winds such as the ney and duduk — intonation deserves its own check. A tuner tells you if a single note is sharp or flat; a recording or a pitch trace shows whether a whole phrase drifts.

Spread it out

Several short sessions beat one long one. Ten focused minutes on a passage, a break, then another ten minutes later in the day or the next morning, generally gives better retention than forty minutes in a row. End each session on a correct repetition.

Doing it with Musaica

Musaica is a free online sheet music reader with practice tools that map onto each step. Upload your PDF or photo and open the practice page:

• Listen first — the score plays back with a cursor on every note.
• Chunk and loop — hold Shift and drag across notes to set a bar range, and it loops.
• Slow down and step up — set the speed anywhere from 10% to 200%, with one-tap presets at 25, 40, 50, 60, 70, 80, 90 and 100%.
• Keep the beat — switch the metronome on, and open the rhythm counter to see the counting syllables for each bar.
• Check intonation — the intonation check listens through your microphone as you play along, with a tuner gauge showing how many cents sharp or flat you are, a pitch trace of the phrase and a report at the end of the session.
• Come back to it — save a passage to your practice library (free account required) and pick up where you left off.