SoundToMIDI

What SoundToMIDI is

SoundToMIDI converts audio recordings into editable MIDI notes in a browser, without requiring software installation. It accepts MP3, WAV, FLAC, M4A, AAC, OGG, and compatible MP4 or WebM audio, with a 100 MB file limit. The audio is decoded and transcribed on the user's device; the maker says audio, generated MIDI, note events, and filenames are not uploaded or stored on its servers. Its transcription uses Spotify's open-source Basic Pitch model to detect pitches across multiple instruments. After conversion, users can transpose notes, filter pitch ranges, adjust timing, edit individual notes, and compare Raw MIDI with Cleaned MIDI. The free plan includes conversion and Raw MIDI downloads without signup or a daily limit. A Music Export Pack costs $2.99, paid once and adds eight files for the current result and its edits, including edited MIDI, a score PDF, MusicXML, practice WAVs, and other exports. WAV exports can include up to 10 minutes of notes. The tool works in modern mobile browsers and can record a melody through a microphone for up to 60 seconds. The maker cautions that transcriptions may contain missing, extra, mistimed, or incorrect notes, and score drafts do not infer tuplets, pedal, fingering, or tempo changes.

Who it suits

SoundToMIDI suits musicians who want to turn recordings into MIDI notes and refine the result in a browser. It also fits people who want to try conversion without signing up, or export additional music files with a one-time purchase.

Limits

The free plan is limited to conversion and Raw MIDI downloads. The Music Export Pack costs $2.99, paid once, applies to one result and its edits, and WAV exports can contain up to 10 minutes of notes; new conversions need a new pack.

Getting started

1. Open the SoundToMIDI website in a modern browser.
2. Upload a supported audio file up to 100 MB, or record a melody through the microphone for up to 60 seconds.
3. Edit notes, pitch range, or timing and compare Raw MIDI with Cleaned MIDI.
4. Download Raw MIDI for free, or buy a Music Export Pack for additional files.
5. Complete paid downloads in the same browser and on the same device.

Verdict

Choose SoundToMIDI if you want browser-based audio-to-MIDI conversion with editing and a free Raw MIDI option. The Music Export Pack may suit users who need its additional file types, but transcription errors and score-draft omissions make review important.