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The ukulele is "a little guitar with four strings", but it has one counter-intuitive feature: the four strings are not arranged from low to high by pitch.

Most people reading a ukulele chart for the first time assume it is a misprint. It is the instrument's defining characteristic.

Structure: small body, four strings, more sound than expected

What the size does:

A scale length only 54% of a guitar's means the same finger shape lands much higher in pitch. So a guitarist picking up a ukulele has to relearn where every chord sits — the shape of the hand is the same, the position is not.

Tuning: why the order is not the pitch order

This is the one thing about the ukulele that must be explained.

Standard tuning is written G–C–E–A. Read casually, it suggests the strings run low to high: G, C, E, A. They do not. On the soprano, concert and tenor sizes the actual pitches are:

The 4th string's G4 sits a perfect fifth above the 3rd string's C4. In organology this is called re-entrant tuning, and its effects are concrete:

• Chords sound bright rather than thick. The lowest note is C4 (middle C) — there is no real bass register — so a ukulele chord sounds hollow in the middle and bright on top. That is its signature.
• Strumming crosses back and forth in pitch. Sweeping downwards you hear G4 → C4 → E4 → A4, a fold that turns back on itself, so the sound reads as two strands interwoven.
• Inversions and arpeggios have to be re-planned. A chord progression where "the bass walks down" on a guitar has to be rearranged here, because the lowest note sits on an inner string.

The baritone size is the exception: it is tuned D–G–B–E — exactly a guitar's 4th to 1st strings, four notes lower. Pitch order matches string order, and there is no re-entrant problem. So "is a ukulele re-entrant?" depends on the size: soprano, concert and tenor are; baritone is not.

Range

尤克里里不是移调乐器，记谱音与实际音高相同。最低音 C4 是第 3 弦空弦，最高音 A5 是第 1 弦第 12 品。

Under two octaves — its most practical limit. It is not suited to instrumental solo repertoire; it is suited to accompanying melody in the middle register.

Note where that register sits, though: C4–A5 is exactly the human middle voice. That is the ukulele's most underrated property. It is small, but its range overlaps a singing voice — so in accompaniment it travels alongside the voice instead of competing with it.

Timbre, and how to hear it

Three cues:

1. Short attack, short sustain. A small body and short strings store little energy, so the sound arrives and leaves quickly — ideal for rhythm playing, poor for long notes. 2. The hollowness of chords. Because of re-entrant tuning the four pitches are interleaved, so a chord has a missing middle layer. Play the same chord on a guitar and a ukulele and the guitar sounds thick, the ukulele bright. 3. Tolerance from short frets. At 350 mm scale, the same finger error produces a smaller pitch error — the ukulele is easier to play in tune than a guitar, one reason it is so often a first instrument.

The tracks under “Listen in the library” are single-line traditional dance tunes, not ukulele recordings — no track in the library can be identified as ukulele music, and that is stated plainly. Timbre is handled by the player above.

Playing techniques

The right hand is far simpler than a guitar's — that is part of the design:

• Finger strumming: thumb and index alternating, or index down and thumb up. Four strings mean a small wrist motion, yet rhythm patterns can be dense.
• Playing with the fingertips: rather than classical nails, the ukulele usually uses fingertips — rounder and softer, matching the short attack.
• Fingerpicking: one finger per string, sharing ancestry with guitar fingerstyle but with smaller spacing and smaller stretches.
• Muting and chucking: the side of the palm across the strings for a clipped percussive sound — ubiquitous in pop accompaniment.

On the left hand, the crucial point is fretting only the strings you need. One of the four (the 4th, G4) is higher than its neighbour, so a shape that looks like a guitar chord sounds different here. Chord charts do not transfer directly.

The family

The whole guitar family looks like this:

• Classical and acoustic guitars: six single strings, pitch order = string order.
• Ukulele: four single strings, pitch order ≠ string order (re-entrant).
• Mandolin: four doubled courses, tuned exactly like a violin.
• Lute: six or more doubled courses, tuning varying with key.

In other words, "four strings" is not unique to the ukulele — the ukulele and the mandolin both have four, but one is single-strung and re-entrant, the other doubled and not.

History

The ukulele's ancestor is the braguinha of Madeira, a small four-string instrument with similar tuning. In 1879 a group of Madeiran instrument makers arrived in Hawaiʻi with the immigrant ships — the instrument was taken up quickly by the royal court and the general public, and within decades it had become a symbol of Hawaiʻi.

The name "ukulele" is Hawaiian, commonly explained as "jumping flea", for the way the fingers move.

The 20th century followed a clear path:

Its place today is clear: the lowest entry barrier with a high harmonic ceiling among small accompaniment instruments. "High ceiling" because it is easy to start but hard to play well — the harmony knowledge required is no less than a guitar's.

Common misconceptions

• "G–C–E–A means low to high." For soprano, concert and tenor, it does not. The 1st string's G4 is a perfect fifth above the 2nd string's C4 — re-entrant tuning. Only the baritone (D–G–B–E) runs low to high.
• "A ukulele is a small guitar; chord charts transfer." Shapes look similar, positions are completely different. At 54% of a guitar's scale, the same shape sounds a large interval higher.
• "It is a toy." Its range C4–A5 overlaps the human voice, which is the most useful register for song accompaniment. It is easy to begin and not shallow, not a toy.
• "Four strings means only simple harmony." Four strings do limit bass movement — but re-entrant tuning makes chord colour more exposed, since with no bass note the timbral difference between harmonies is easier to hear.
• "The baritone is just a bigger one." Its tuning changes to D–G–B–E (a guitar's 4th–1st strings), which changes both the sound and the chord logic. It is a different instrument.

Next

Two comparisons: the classical guitar (the normal case, where pitch order equals string order) and the mandolin (also four courses, but doubled, and tuned like a violin). To understand why strumming sounds interleaved, intervals on re-entrant tuning is the place to look. :::

Sources

• 琴体尺寸取通行制琴数据：女高音（soprano）型号琴体长 240 毫米、上腰宽 145、腰宽 110、下腰宽 175 毫米，弦长 350 毫米
• 「女高音/中音/次中音三型的定弦为 G–C–E–A 且第 1 弦为高音 G（复入式定弦）；上低音型为 D–G–B–E」属通行乐器学常识，本文为原创表述
• 起源自 19 世纪葡萄牙马德拉群岛的 braguinha，1879 年由移民带到夏威夷，依通行乐器史叙述
• ⚠️ 库内没有标题或作曲家可确认指向尤克里里的曲目 —— 本条给出的 5 首是单声部传统舞曲（尤克里里最典型的用途是给这类旋律配和弦），音色由试听件负责

Used for fact-checking only; all prose is original.