Bass to MIDI

Drop a bass recording to turn into MIDI, or select a file. It opens in the studio, ready to export.

WAV · AIF · AIFF · MP3 · M4A · FLAC · OGG

How to turn a bass line into MIDI

A bass line is one note at a time, which is the easy case for transcription, played in the register where pitch detectors most often get the octave wrong, which is the hard one. The line here is read by a tracker that is told it is listening to a bass.

  1. Add your recording: Drop a WAV, AIFF, MP3, M4A, FLAC or OGG: a bass take, or the whole song.
  2. Say what it is: One instrument, or a full mix. From a mix, the bass is separated from the band before it is read.
  3. Take the MIDI: The line as notes on the song’s own tempo and bar lines. Edit it, export the .mid, or play it on a different bass.

More ways to work with your music

Try our online tools to separate, transcribe and convert. Doseedo does it all.

Questions about the bass to MIDI converter?

We have answers.

Can I get the bass line from a full song as MIDI?

Yes. Drop the song and say it is a full mix. The bass is separated first, then transcribed.

Does it work on upright bass?

Yes. Upright and electric are both read as a single low line.

Is it free?

Yes, to start. A free account comes with 120 credits a month, with no card needed to start: transcribing one part is 2 credits, and a full mix is separated first, which is 20. Pro has 2,000 a month.

Does it handle slides and ghost notes?

A slide is written as the pitches it passes through. Ghost notes are quiet and short, and the faintest of them may not be written.

Try our free bass to MIDI converter

  • The octave is the trap

    Low notes have strong overtones, and a detector that locks onto the second harmonic writes the whole line an octave too high. The tracker used here is conditioned on register: it knows the range a bass plays in and looks for the fundamental there.

  • Straight from the record

    You do not need the bass on its own. Drop the full song, say it is a mix, and the bass stem is separated first and then transcribed. Bass is one of the stems separation gets most right, so what the tracker hears is close to the player alone.

  • On the grid the band played

    The tempo and downbeats are detected from the recording, so the notes land in bars. A line that sits behind the beat is written where it was played, and you choose afterwards whether to quantise it.

Bass to MIDI, bass transcription: one job

Bass to MIDI, a bass to MIDI converter, bass transcription and bass line transcription all name this one job. To hear the line alone first, use the bass isolator.

Try these Doseedo tools