How to Sing Harmony: Finding a Harmony Part by Ear
A harmony part is a second melody sung at the same time as the main one, on different notes. Most of the time it sits a little above or below the melody and follows its rhythm. On its own it can sound odd. Against the melody, it makes the song bigger.
The chorus comes round at rehearsal. The guitarist leans into the mic: "I'll jump in." First try, they either sing the melody note for note or wander somewhere nobody can place. The singer loses their own note. Both of them stop.
There's a method to this, and it's simpler than it looks.
Thirds, sixths, fifths: what does each one sound like?
An interval is the distance between two notes. Harmony parts mostly use three:
| Interval | Example (from C) | How it sounds | Where it works |
|---|---|---|---|
| Third | C and E | Warm, full, the most natural harmony | Pop, rock, folk, almost anywhere |
| Sixth | C and A | More open than a third, a bit sweeter | Harmony sung below the melody |
| Fifth | C and G | Hollow, hard, strong | Rock and punk choruses, anthem-style parts |
When you count a third, the starting note counts too: C, D, E. Three steps. Staying in key, your thirds will sometimes be major (four semitones) and sometimes minor (three). Your ear usually sorts that out on its own. A third that steps outside the key sounds wrong straight away.
So it's easier to think of harmony in terms of the notes in the song's key, not semitone maths. If the song is in G major, your notes are the seven notes of that key.
A sixth is really an upside-down third. The note a third below the melody, moved up an octave, lands a sixth above it. An octave is the same note higher or lower. It thickens the sound, but it isn't really harmony.
Above or below the melody?
Two things usually decide it: where the singer's voice is comfortable, and what the song needs.
A harmony above the melody sounds bright and grabs attention. Great for lifting a chorus. But sitting on top, it can easily bury the lead. A harmony below sounds warmer and sits back, like it's holding the lead up. Good for verses.
Rule of thumb: look at the harmony singer's comfortable range. If their voice is lower than the lead, start below. If it's higher, start above. Someone who knows their vocal range will find it in a few tries.
How do you find a harmony part by ear?
The easiest start isn't counting a fixed interval from the melody. It's singing one of the notes of the chord underneath. A chord is already three notes. If the melody is on one of them and you sit on another, you'll sound right.
- Play the key's root note on a keyboard or guitar and let it ring. That's called a drone. A fixed note gives your ear something to measure against.
- Sing the melody over it a few times.
- Now try a third above the melody. Same rhythm, moving in the same direction.
- Mark the notes that sound off. Usually moving one or two of them by a semitone brings them back into the key.
- Play a recording of the melody and sing your harmony over it. Singing a part right on your own and holding it against the melody are two different skills.
Record it on your phone and listen back. It's hard to hear whether you're on the note while you sing, because the other voice keeps pulling you. The tips in our guide to recording vocals at home help here too.
Should both voices move the same way?
Usually, yes. When the harmony moves in the same direction as the melody at the same interval, that's parallel motion. Most pop and rock chorus harmonies work that way. It's the easiest to follow.
But it's not the only option. One voice can hold while the other moves. That's oblique motion, and it works nicely in verses: the harmony stays on one note while the melody moves around it. In contrary motion, one goes up while the other goes down. Harder, but more interesting to hear.
Parallel thirds are enough to start. Once they're solid, try a bit of oblique motion on the last line of the chorus for some colour.
How do two voices blend into one on stage?
Hitting the right notes isn't enough. If the voices don't blend, you sound like two separate singers standing next to each other. What works for us:
- Match your vowels. If the lead sings an open "ah," the harmony should too. Different mouth shape, different sound.
- Ease off the vibrato. A straighter tone usually blends better in a harmony part.
- End together. Especially consonants: "s," "t," "k." One early and one late sounds messy.
- Harmony a touch quieter. It should sit behind the lead, not in front. You can do that with mic distance as well as on the mixer.
- Keep the same distance from the mic. A harmony singer who drifts off the mic while playing guitar just vanishes.
Monitors matter too. If the harmony singer can't hear the lead, they can't hold their note. At soundcheck, make sure the lead vocal is in the harmony singer's monitor. A cardioid vocal mic picks up little from behind, so putting the monitor behind the mic, in front of the singer, cuts the risk of feedback.
How do you sing harmony while playing?
In most bands, harmonies come from someone holding an instrument: the guitarist, bassist, keys player. That's a different job from just singing. Your hands are playing one rhythm, your voice another melody, and they pull at each other.
The order that works for us: first get your instrument part solid enough to play with your eyes closed. Then practise the harmony without the instrument, just against the melody. Only then put them together, at a slow tempo. Usually the problem isn't the voice, it's the hands: the harmony comes in and the strumming slips.
You can also simplify the part. If the guitar strums less and the bass plays fewer notes on the harmony line, doing both gets easier. The crowd won't notice the simpler part. They will notice the harmony.
Where should you start?
The chorus. Verses often stay single voice, and the chorus is where a harmony makes the biggest difference. Pick one line first, usually the last line of the chorus. Nail it in parallel thirds, then build out line by line.
At rehearsal, have the harmony singer and the lead work a few minutes without instruments. It's hard to hear a wrong note with the band playing. Two voices alone, it's obvious. A proper vocal warm-up beforehand helps both voices hold steady too.