How to use this workflow
Establish the source and target
Use a reliable key reference where possible. If you use automatic key detection, check its alternatives and listen for whether the suggested tonic fits the passage.
Count the semitone difference
Use the chromatic sequence in the next section. Choose an upward or downward interval within the pitch changer’s −12 to +12 range.
Apply, listen and save
Load the recording in the pitch changer, set the interval and leave speed at 100%. Preview difficult passages, generate the result and download WAV or MP3.
Count chromatic steps to transpose audio
A practical chromatic sequence is C, C♯/D♭, D, D♯/E♭, E, F, F♯/G♭, G, G♯/A♭, A, A♯/B♭, B, then C again. Each neighboring step is one semitone. Enharmonic names such as C♯ and D♭ use the same pitch class in this equal-tempered calculation.
Two directions can reach the same pitch class in different registers. C to G can be +7 or −5 semitones. Both have G as the target tonic, but one raises the entire recording and the other lowers it. Choose the register you actually need.
Swipe or scroll sideways to read all columns.
| Source → target | One possible shift | Mode after shifting |
|---|---|---|
| C major → D major | +2 semitones | Major |
| C major → B♭ major | −2 semitones | Major |
| A minor → B minor | +2 semitones | Minor |
| G major → E major | −3 semitones | Major |
Transposing a recording is different from rewriting a score
An audio pitch shifter transforms the mixed waveform. It does not choose written note spellings, update a key signature or produce a part for a transposing instrument. Use notation software when the deliverable is sheet music or editable notes.
Likewise, a uniform shift preserves the distances between notes. Converting a major arrangement to minor requires changing selected intervals or harmonies, not merely moving every note by the same amount.
Check the new file in context
Listen to exposed vocals, bass attacks and sustained chords. A mathematically correct interval can still sound unnatural after a large shift. Reducing the interval, finding another arrangement or recording a new accompaniment may give a better musical result.
Use the key label as a check, not proof. A recording that changes key or has ambiguous harmony may still receive only one summary label from the detector. Keep the original and record the semitone setting with your downloaded version.
Common questions
What if I only know that the song is too high?
Start with a small negative shift and sing both the low and high phrases. You can choose a useful practice range without trusting an automatic key label.
Will this change the tempo?
With the pitch changer’s speed at 100%, the intended change is pitch rather than tempo. Use the independent speed control only when you want a tempo change too.