How to Stack Vocal Harmonies (3rds, 5ths and Octaves)
Vocal mixing · 4 min read
Start with a third above the melody and a third below it, and use the fifth only where the chord supports it. Pan the pair 50–80% wide, sit them 6–9 dB under the lead, and dip 2–3 dB at 300–500 Hz on the harmony bus so the stack stays readable.
Harmony level
-6 to -9 dB
Panned 50–80% · -2 to -3 dB at 300–500 Hz
The 60-second answer
Sing a third above the melody and a third below. Move any note that is not a chord tone to the nearest one. Pan the upper third 60% one way and the lower third 60% the other, both 6–9 dB down. Bus: high-pass 150 Hz, bell -2 to -3 dB at 400 Hz.
What each interval gives you
A third above adds brightness and lift without changing what the song is about. A third below adds weight and keeps the top of the mix clear, which is why it works when the lead is already high. A fifth is open and anthemic, and thins out fast if you use it every line. An octave above makes a hook feel higher with no new harmony at all. An octave below adds authority and muddies quickest: if the lead sits near C4, that part lives around 130 Hz, so do not high-pass it at 150 Hz with the rest of the stack.
Why harmony stacks turn into mud
Every voice you add stacks another copy of the same body region. Most singers put the bulk of their weight between roughly 200 and 500 Hz, so four voices put four times the energy in one narrow band while the consonant range barely moves. The vowels rarely match either: slightly different mouth shapes smear the formants together. The fix is one dip on the bus and note ends that stop earlier than the lead's.
Building the stack, step by step
| # | Do this |
|---|---|
| 01 |
Write the chords out first You cannot pick a harmony without knowing the chord under each melody note. Chord per melody note |
| 02 |
Sing the third above, fix the strays Any note that is not a chord tone moves to the nearest one, even if it breaks the parallel interval. Third above → chord tones |
| 03 |
Add the third below Same melody, a third down. This is the part that makes a stack sound like a group instead of a plugin. Third below |
| 04 |
Double each part for a wall Two passes per harmony, panned as a mirrored pair. Same rules as double tracking: quieter, calmer, less vibrato. 2 takes per part |
| 05 |
Pan wide, in pairs Upper third 60% one way, lower third 60% the other. Doubled parts spread at 40% and 80% for depth as well as width. 40–80% · balanced L/R |
| 06 |
EQ the bus once High-pass 150 Hz (not an octave-below part), bell -2 to -3 dB at 300–500 Hz with Q around 1, shelf -2 dB above 12 kHz. HPF 150 · -3 dB @ 400 Hz |
| 07 |
Mute them in the verse Harmonies are a chorus event. Run them all song and the chorus has nothing left to give. Chorus and last hook |
The trick: pan wide, dip 400 Hz, end every note early
Three moves, and none of them is the tone move people expect. First, width. A harmony panned 20–30% is still inside the lead's centre image, and you will spend an hour EQing it into a hole. Push it to 60–80% and the ear separates the parts by position instead. Second, one bell on the harmony bus: -2 to -3 dB at 300–500 Hz, Q around 1. On a single voice that cut is inaudible. On four stacked voices it removes the exact pile-up that makes a stack sound like a blanket. Third, the one nobody does: trim every harmony note to end 100–200 ms before the lead's. The last voice on every phrase is then always the lead, so the words stay attached to the main singer even when the stack is loud.
Stop guessing the chain.
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Get the Vocal Chain Bible — $48 →Mistakes that kill it
- Notes outside the chord. A parallel third is a starting point, not a rule. A harmony note that is not in the chord sounds wrong on every listen.
- Pitch-shifted harmonies. A shifted copy has the same timing, vowel and tone, so it stacks exactly the band you were protecting.
- Harmony everywhere. Verse harmonies rob the chorus. Cut them, or at least drop them 4 dB lower in the verse.
- Tuning to the scale. Tune harmonies to the lead's actual pitch, not to a grid, or the beating between parts never goes away.
Two extra parts, one bus EQ move, one trimming pass. That is a stack.
Keep going
FAQ
What harmony should I sing over a melody?
Start a third above. If that third lands outside the chord underneath, move the note to the nearest chord tone and keep going.
How loud should backing harmonies be?
6–9 dB under the lead for support, closer to 4 dB when the harmony is meant to be heard as a second singer on the hook.
Should harmonies be panned or centred?
Panned. 50–80% out on each side keeps the centre clear and saves you carving holes with EQ.
Who's behind this
Ivan Meshcheriakov · IvanFromRnD
5+ years ago I moved to LA with zero connections and started building from nothing — 14-hour days, meeting people and interning at studios. It took me 5+ years to meet and interview 100+ Grammy-winning engineers — then I turned it all into the Vocal Chain Bible.
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