Trichordo vs tetrachordo

The previous chapter introduced both forms briefly. This one digs into the real differences — because choosing which bouzouki to play (or just to understand when listening) is a meaningful musical decision.

The instruments side by side

	Trichordo (DAD)	Tetrachordo (CFAD)
Number of courses	3	4
Number of strings	6 (three pairs)	8 (four pairs)
Tuning	D – A – D	C – F – A – D
Intervals	P5 – P4	P4 – M3 – P4
Era	Pre-1950s, traditional	1950s onward, modern standard
Strengths	Modal melody, single-line playing	Chord voicings, harmonic playing

The historical argument

The trichordo was the bouzouki of rebetiko’s classical era — the 1920s through the 1940s, in the cafés and prisons of Piraeus and Athens. Markos Vamvakaris, Vassilis Tsitsanis, Yiannis Papaioannou, Stratos Pagioumtzis — all played trichordo. The repertoire of rebetika songs that defined the genre was created on this instrument.

The trichordo’s three courses, tuned DAD, produce a sound that lives in the melodic and modal world. You can play chords on it, but the tuning doesn’t make it especially easy. What it does make easy is single-line playing with a rich drone — and traversing the δρόμοι (Greek modes) up and down the neck.

The tetrachordo was Chiotis’s intervention. By adding the C course at the bottom and retuning everything to CFAD, he gave the instrument a fourth voice and an interval pattern (P4 – M3 – P4) that — as we noted — mirrors the top four strings of a guitar. Suddenly, every chord shape a guitarist knew was transferable.

The aesthetic argument

For some musicians, the trichordo’s “limitation” is precisely its appeal. Without the easy chordal possibilities of CFAD, a trichordo player is forced to think melodically — to develop the line, the ornament, the phrasing. The result is closer to the maqam and Ottoman traditions the bouzouki sprang from.

For others, the tetrachordo’s expanded vocabulary is liberating, not diluting. A player can move between modal melody and Western harmony fluidly — playing a Hijaz line one moment and a ii-V-I jazz progression the next.

Which to learn on

This site teaches tetrachordo because:

1. It’s the working standard of modern Greek music.
2. Its chord-friendly tuning makes it the easier instrument to learn harmonically, especially with the theory foundation you already have.
3. The vast majority of modern tutorials, tabs, and recordings assume tetrachordo.
4. Everything you learn on tetrachordo translates back to trichordo if you decide to specialize later. (The reverse — going trichordo first then learning chordal playing — is also valid, but harder for a beginner taking the chord-driven path.)

If your goal is to play rebetiko period-correctly — to reproduce the sound of pre-1950s recordings — you should consider learning trichordo specifically. But that’s a specialized path, and most learners aiming to play Greek music broadly are better served by tetrachordo.

In the fretboard explorer

The explorer on the previous chapter has an Instrument dropdown at the bottom. Switch to “Bouzouki (trichordo)” and you’ll see only three courses, tuned DAD. Try the same chord on both — you’ll see immediately why CFAD is more chord-friendly. Many chord positions that fit on a tetrachordo can’t be played at all on a trichordo without rearranging the voicing.

Recap

• Trichordo (DAD) — older, three courses, tuned in fifths and fourths. Modal, melodic instrument. The classical rebetiko bouzouki.
• Tetrachordo (CFAD) — modern, four courses, designed by Chiotis in the 1950s. Chord-friendly. The standard working bouzouki today.
• This site teaches tetrachordo because it’s the modern norm; trichordo remains the right choice for period-authentic rebetiko playing.