Published by PitchChanger · Updated · How these guides are made
How to use this workflow
Write the melody’s actual extremes
Use a score or instrument to confirm the lowest and highest sung notes, including the verse. The first melody note is not necessarily either extreme.
Compute both limits on the shift
The shifted low must stay at or above your usable low; the shifted high must stay at or below your usable high.
Audition both passages
Choose a feasible whole-semitone value, keep Speed at 100%, and test both extremes. The tool cannot measure your vocal range or select a comfortable key.
A full-range calculation can rule out a uniform shift
Suppose a melody spans A3 (MIDI 57) to E5 (76), and your current usable range is G3 (55) to C5 (72). The low end requires shift s ≥ 55−57 = −2. The high end requires s ≤ 72−76 = −4. No single value can satisfy both conditions.
This is a hypothetical range example, not advice about an individual voice. At −4 st the chorus reaches C5, but the verse falls to F3. At −2 st the verse reaches G3, but the top remains D5. Neither fixes the complete melody.
Swipe or scroll sideways to read all columns.
| Shift | New low | New high | Against G3–C5 |
|---|---|---|---|
| 0 st | A3 | E5 | High exceeds C5 |
| −2 st | G3 | D5 | Low fits; high still exceeds C5 |
| −4 st | F3 | C5 | High fits; low is below G3 |
Use the overlap of the two constraints
For source low L and high H, and usable low a and high b, acceptable shifts lie between a−L and b−H. If the lower bound exceeds the upper bound, the melody spans more than the stated usable range. A key change preserves that span.
If the same example instead used F3–C5 as the usable range, the lower bound would be −4 and the upper bound −4: one theoretical whole-semitone choice, −4. That still needs a real singing check because comfort, vowel, duration and register are not captured by note extremes.
Choose a musical solution when no interval fits
Consider changing a difficult phrase, taking an octave locally, or choosing another arrangement. Those are performance or external editing decisions. A uniform browser pitch shift cannot selectively rewrite a melody or change major into minor.
Pitch Changer offers −12 to +12 whole semitones and independent 50–150% speed. It has no target-key dropdown, custom formant control or vocal-range analyzer. Save a test copy and keep the original recording.
Common questions
Does lowering always make singing easier?
No. It also lowers the verse and any already-low notes. Check both extremes.
Can a uniform shift make a melody span smaller?
No. It preserves the interval between its lowest and highest notes.