Basic Pitch detects notes in your audio and creates a standard MIDI file. Review the detected notes to confirm the result fits your musical idea.
Tips
Conversion workflow
Treat the conversion as a sequence of decisions, from choosing the source to deciding what belongs in your project.
Start with an MP3, WAV, FLAC, OGG, M4A, or AAC file up to 50 MB. Choose the recording that contains the musical phrase you want to convert, then confirm that its file type and size meet the input limits. This first checkpoint is about providing a valid file; judgments about the detected notes come later.
The tool decodes and analyzes your audio in the browser, where Basic Pitch detects notes. Preview the original audio and detected MIDI in the piano roll, and use the velocity lane plus pitch and time zoom controls to inspect the result.
Choose the original detected MIDI when the next task needs the full initial detection preserved, such as handing off a neutral starting point or making different choices later. Choose the currently filtered MIDI when you have already settled on the notes you want carried forward and the next task should start from that narrower result.
Refine the result
Use the cleanup stage to refine the detected notes before export, guided by the musical part you want to preserve.
Switch between polyphonic mode and melody mode according to the material you want the analysis to emphasize. Then filter notes by minimum duration, strength, and pitch range. Duration can remove very brief events, strength can reduce weaker detections, and pitch range can keep the result within the register that matters to your part. Use these controls as targeted tests, not as a promise that every source will need the same settings.
Adjust one filter value at a time and compare the resulting note set before changing another control. Keep the setting that retains the musical line you want while reducing notes you do not need.
After importing the downloaded MIDI in a DAW, continue with detailed note correction, timing and velocity refinement, instrument assignment, phrasing, section structure, layering, and arrangement. Shape transitions, duplicate or rewrite passages, align parts with the broader project, and organize the performance so it is ready for the production steps that follow.
Source selection
Start by identifying the musical line you want to carry into MIDI. The next checks help you decide whether the source is ready as-is or needs to be isolated first.
Compare five common source situations: a vocal line, humming, piano, guitar, and a dense full mix. Vocals or a single instrument usually give the model a clearer target because one musical part leads the recording. Humming can be useful for a sketched melody, while piano or guitar may suit an instrumental phrase. A full mix asks the model to interpret several overlapping parts and may produce extra notes.
Play the section and follow the musical line you want to capture. If you can hear and track that line from start to finish, the clip is ready for a first pass; if you lose it, choose a shorter or clearer passage and test again.
For a dense song mix, use Vocal Remover to isolate the vocals before you create MIDI from that source. This is a practical choice when the vocal melody is the line you want and the accompaniment makes it difficult to separate. Convert the isolated vocal rather than asking one analysis to resolve the entire arrangement at once.
Common questions
Before you start, check these details about access, microphone recording, saved history, account audio, and browser requirements.
Yes. You can convert audio to MIDI and download the result without paying or signing in.
Yes. You can record with your browser microphone for up to five minutes.
When you are signed out, conversions are saved in the current browser. When you are signed in, your history stores MIDI and conversion metadata, but not the source audio.
For signed-in users, existing audio can be selected from AI Music, Vocal Remover, Stem Splitter, or AI Song Cover results.
No. You can use the converter without desktop software in a supported web browser, though browser support can vary and is not guaranteed for every browser.
