Free · in your phone's browser · nothing uploaded
Cuatro tuner
A free cuatro tuner in your phone's browser: the Venezuelan cuatro's A D F♯ B or the Puerto Rican cuatro's five pairs B E A D G, one at a time, with a needle and the cents. Nothing uploaded.
Venezuela or Puerto Rico, the switch decides. Mika then asks for the right four or five.The microphone closes when you stop, when all is in tune, or after half a minute of quiet. Nothing is recorded.
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The strings in Hz
Venezuelan cuatro
| String | Note | Hz |
|---|---|---|
| 4th | A3 | 220.00 |
| 3rd | D4 | 293.66 |
| 2nd | F♯4 | 369.99 |
| 1st | B3 | 246.94 |
Other tunings
| Tuning | Notes | Hz |
|---|---|---|
| Puerto Rican cuatro | B2 E3 A3 D4 G4 | 123.5 · 164.8 · 220.0 · 293.7 · 392.0 |
At A4 = 440 Hz; the reference switch above moves them all.
How to tune
Two instruments share the name. The Venezuelan cuatro has four single nylon strings, A D F♯ B from the fourth to the first, and it's re-entrant: the first string, B, sits below the F♯ next to it. Tune the A, D and F♯ up the neck, then drop to the B.
The Puerto Rican cuatro has ten strings in five pairs, B E A D G, the national instrument of the island. Its two lowest pairs, B and E, are octave pairs, one thin string an octave above the thick one; the tuner folds octaves, so tune both against the same note. The top three pairs are unisons.
Then play something
The notes you tuned can go into Brumm as a short melody over a beat. Hum a line on top and it becomes an instrument.
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