Change Tempo

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Upload a MIDI or MusicXML file and change its tempo. You can multiply the original tempo (e.g. 1.5× faster, 0.5× slower) to quickly create slower practice versions or faster renditions.

Input data

Upload MIDI or MusicXML file (R)

Allowed file types: mid, midi, xml, musicxml
Max size : 25 MB
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Tempo factor (e.g. 1.5, 0.5) (R)

Change Tempo

Results

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Help

The Change Tempo app changes the playback speed of a MIDI or MusicXML file by applying a tempo multiplier. A value above 1 makes the piece faster, while a value below 1 makes it slower.

This is useful for practice tracks, rehearsal material, alternate versions of a composition, or quick experiments with feel and speed. The app accepts MIDI and MusicXML files and returns a tempo-adjusted MIDI file.

Helpful background: Tempo, MIDI, MusicXML.

How to use

Use the app by completing the required fields, checking any optional settings, and then starting the process.

Prepare your input: Add the files, text, numbers, or choices requested in the form.
Review the settings: Confirm that required fields are filled in and optional settings match the result you want.
Run the app: Click the Change Tempo button and wait for Melobytes to process your request.
Save the result: Use the result links or previews shown on the page after processing is complete.

Input data

Upload MIDI or MusicXML file	Upload the source file used by the app. Accepted file types: .mid, .midi, .xml, .musicxml. Maximum file size: 25 MB. Required.
Tempo factor (e.g. 1.5, 0.5)	Enter the requested text value. Required. Default value: `1.2`.

Tip: Required fields must be completed before processing. For best results, use clear source material, choose the closest matching language or music setting, and keep uploaded files within the listed limits.

Output

When the process finishes, the app shows the available result items on the page.

Download Tempo-Changed MIDI — MID

Typical processing time is about 60 seconds, although larger inputs or busy periods can take longer.

Trial limits may apply according to the current Melobytes account settings.

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