Mirinex

Singing practice · Updated 2 October 2026

Slow down a song
without changing its pitch.

Slow down a song without changing its pitch and that fast run stops being a blur. You get more time for every word, and the melody stays in the key you’ll actually sing it in.

It works on the full song or on a minus one you’ve already made. Learn the line slowly, then bring the speed back up in steps until you’re singing it at the real tempo.

Slow it down and keep the key

  1. Open your song. In the pitch changer, select Choose a file and pick the track. MP3, WAV and M4A all work.
  2. Leave Pitch (semitones) at 0. That keeps every note where it is while the tempo changes.
  3. Set Speed (%) to 90. It’s a good first try for a line that feels a bit rushed. Drop to 80 if you need to pick it apart. The range is 75% to 150%.
  4. Press Play. Sing the tricky line along with it. Listen for the breath before it and the final consonant, not just the fast notes.
  5. Select Download WAV. The file name ends in “-pitch”, so add the speed too. That way you won’t mix it up with the original later.

How slow should you go?

Pick the fastest speed at which you can still sing the whole line cleanly, with the words, breaths and note changes all connected. Slower isn’t always better. Once a speed feels easy, move up a step.

A simple ladder: start at 80%, go to 90% once you’re landing the entrance every time, then finish at 100%. Save each one as its own file. Keep Pitch (semitones) at 0 for all of them so your ear learns the same notes every time.

Work on just the hard part

If one chorus or one run is giving you trouble, cut it out first with the audio cutter. Leave a bar or two of music in front so you get a count-in and a place to breathe. Then open that clip in the pitch changer and slow it down.

Slowing a song makes it longer: a 60-second section at 80% runs 75 seconds. The slowed file can be up to 20 minutes, so it’s easier to tackle a long song in sections anyway. If you trim after slowing, remember the timestamps have moved too, and find the end of the phrase by ear.

Finish at full speed

When the line feels solid, set Speed (%) back to 100 and press Play. Sing on into the next line too, because the join between phrases is easy to skip when you’ve been drilling one bit. If someone else is running the sound at a videoke night or church rehearsal, name your files so they can pick the right speed without opening every one.

Slow down your song

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