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Build two chords
Choose the starting harmony and the chord that follows it.
Use this voice leading analyzer to see how individual voices move from one chord to the next. Choose two harmonies, compare specific voicings and trace common tones, stepwise motion, upward and downward movement, and larger leaps. Explore more practical resources in Audio Tools for Musicians, or return to Ronter Sound.
Build two chord voicings and inspect how every voice moves between them.
| Voice | Chord A | Chord B | Movement | Direction | Type |
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A chord progression can be described as a sequence of chord symbols, but that description does not show what happens to the individual notes inside those chords. Voice leading looks at those note-to-note paths.
Choose a starting chord and a destination chord. The analyzer creates several register-aware voicings for each harmony. After you select the two shapes you want to compare, it pairs their voices from low to high and measures the movement in semitones.
The result shows notes that remain stationary, voices that move by a small interval, larger leaps and the overall amount of pitch movement between the two selected shapes. For other interactive listening and music exercises, explore audio tools for recording, mixing and ear training.
Voice leading asks a different question from chord identification: not only “What harmony is this?” but “Where does each musical line go next?”
Choose the starting harmony and the chord that follows it.
Compare actual notes in registers rather than abstract pitch classes.
See stationary notes, ascending lines, descending lines and leaps.
Change one voicing and immediately compare the new melodic paths.
When chords are considered only as vertical stacks, it is easy to miss the horizontal lines created by their individual notes. A progression may contain perfectly familiar chords while producing very different internal motion depending on how those chords are voiced.
One note may remain unchanged between two harmonies. Another may rise by a semitone. A third may fall several semitones. Together, those movements create melodic relationships inside the progression even when they are heard as accompaniment rather than as separate melodies.
This is particularly useful when preparing layered parts for music recording. Instead of asking every instrument to jump to a new root-position chord, an arrangement can preserve shared notes and move other voices according to the musical effect you want.
A common tone is a pitch shared by two harmonies. When the same note can remain in the same register from one chord to the next, the analyzer marks that voice as stationary. This is the simplest possible movement: zero semitones.
Common tones can help connect chords without requiring every layer of an arrangement to change simultaneously. They are useful to notice in keyboard writing, guitar arrangements, sustained instrumental textures and background vocal parts.
If the arrangement will eventually include recorded vocals, the guide to vocal recording covers the performance and recording stage after those harmonic parts have been planned.
Moving by one or two semitones keeps neighboring pitches close. Larger intervals create more obvious melodic displacement. Neither type of motion is automatically better: the important point is to see what the voices are actually doing so that the choice can be intentional.
A tightly connected progression may use several common tones and short movements. Another arrangement may deliberately use wider jumps to change register or create contrast. The analyzer gives you a concrete view of that difference rather than assigning one universal solution.
Once parts have been arranged and recorded, their register also affects how they interact in production. The interactive online audio mixer provides a separate way to explore balance and placement after the harmonic material has become recorded sound.
A voice leading analysis tool is most useful when you already have two harmonies and want to investigate the connection between them. The chord symbols establish the harmonic material; the selected voicings determine the actual melodic movement.
Looking only at the labels Cmaj7 and Am7 tells you which notes belong to each harmony. Looking at the four lines above reveals something else: two voices can stay where they are while the remaining voices move only a short distance.
The exact result depends on register. C3 and C4 belong to the same pitch class, but they are not the same physical destination for a voice. That is why this analyzer works with octave-specific notes rather than reducing every note to one of twelve pitch classes in the final comparison.
Try selecting a different voicing for only Chord B. The chord name stays the same, but the total movement and largest leap can change substantially because individual notes now have different destinations.
Keep both chord symbols unchanged. First compare root-position shapes, then choose an inversion for the second chord, and finally choose a wider shape. Watch which voices stay still and which movements become shorter or longer.
Songwriters can use voice movement to change the character of an accompaniment without replacing the progression itself. A keyboard part can preserve notes under a melody, an inner voice can move chromatically, or the highest chord tone can form a secondary melodic line.
When an arrangement is ready to become a recorded sketch, the song demo production page looks at the next stage of developing the musical idea. If it is your first time preparing material for a session, the first-time recording studio guide can help organize the practical side.
Keyboard instruments make several voices visible at once, which makes them especially convenient for studying chord-to-chord movement. But the same principle applies when harmony is divided between guitar, bass, strings, synths or other instruments.
In a multi-instrument arrangement, the “voices” do not have to belong to one performer. A bass note can form the lowest line while upper chord tones are distributed among other instruments. Exploring the movement before an instrument recording session can help clarify which notes each part actually needs.
Vocal harmony makes horizontal movement especially easy to notice because each singer follows a melodic line. If every harmony note jumps to the nearest root-position shape, individual parts may behave very differently from parts designed as singable lines.
Use the analyzer to inspect the movement of each voice separately, then sing or play those lines one at a time. This can reveal whether a part behaves like an understandable melody rather than only functioning as one slice of a vertical chord.
Performance preparation also has a psychological side. The resource on musician psychology and recording confidence explores the transition from practicing a part to performing it in a recording environment.
Voice relationships can also be described by comparing directions. When two voices move in opposite directions, they show contrary motion. When they move in the same direction, their motion is similar. When one voice stays stationary while another moves, the relationship is oblique.
These descriptions are useful because they shift attention from a chord as a single object to interactions between melodic strands. The table above reports the direction of each individual voice, while the visual map makes those paths easier to compare at a glance.
Composition does not require every chord connection to minimize motion. Sometimes a wide leap is part of the musical idea. Sometimes a line deliberately changes register. Sometimes parallel movement creates exactly the texture the arrangement needs.
For that reason, this composition voice leading analyzer reports measurable movement rather than declaring one voicing universally correct. Use the information to compare possibilities and make the musical decision in context.
Different styles can make very different use of harmonic spacing and melodic motion. The music genre recording overview and the more focused page on blues and country recording provide further context for how arrangements can change with style and instrumentation.
Harmonic movement is only one layer of a production. Rhythm, articulation, register, timbre and performance all influence whether several musical parts feel connected. Voice-leading analysis is most useful when it helps you make those arrangement choices before trying to solve every interaction later with processing.
Once the parts are recorded, the focus shifts toward balance, space and sonic relationships. The mixing and mastering page covers that later production stage, while the mixer console simulator offers an interactive way to explore mixer controls.
Follow the musical process from chord movement and arrangement into performance, recording and production.
Try another pair of harmonies above, or continue through the complete collection of audio tools for musicians.
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