Long sounds, small tsu and n: the three beats learners get wrong most

おばさん (auntie) and おばあさん (grandmother), or 来て (come) and 切って (cut) — the difference in each pair isn't "hold it a bit longer". It's one whole beat. English doesn't count time this way, which makes this the most predictable place for English speakers to lose points. It isn't that you can't make the sound — it's that you aren't counting.

What a beat (mora) is

Japanese doesn't run on syllables. It runs on beats, and every beat takes about the same amount of time — steady, like a metronome. がっこう (school) is four beats: がっこう — the small tsu is one beat of silence, and the long vowel is the vowel before it filling another whole beat. English is stress-timed: the syllables you don't stress get squashed and hurried through. Bring that habit into Japanese and the small tsu disappears, the long vowel shrinks to half a beat, and you've said がこう — which is either a different word, or nothing at all.

Three beats you can't see

Long vowels: the extra beat is the vowel itself

• おばさん is 4 beats, おばあさん is 5. Or ここ (here) against 高校(こうこう)。
• In writing, watch for these: あ-row + あ, い-row + い, う-row + う, え-row + い (said え), お-row + う (said お). Katakana just uses ー.
• How to practise: tap it out. Tap the table once per beat, twice for a long vowel. Yes, it feels childish — and no, there's no other way. Your body has to learn this one.

Small tsu: one beat of silence

• 来て / 切って, 音 / 夫 (おと / おっと). The small っ makes no sound of its own. It's the beat you hold: set your mouth for the next consonant, stop for a full beat, then let it go.
• The usual mistake is rushing past it. A small tsu isn't fast — it's a stop. Better to hold it too long than to slide over it.

ん: a beat of its own

• 千円 (せんえん) is 4 beats, not 3 as in "せねん" — ん can't be folded into the sound before it.
• In English, the n at the end of "pen" rides along inside the syllable. Japanese ん is its own beat — when you count, give it one.

A routine you can actually follow

1. Hear it before you say it. Take a pair (おばさん/おばあさん, 来て / 切って) and test yourself on which is which. Until you can hear the difference, you can't judge your own attempts either.
2. Count while you say it. For a new word, work out how many beats it has, say it three times on the beat, then go back to normal speed.
3. Record and compare. Play yours, then play the model. Hearing the difference in length beats any amount of explanation.

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