Jambox
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Audio or video to sheet

A recording is not a chart. Jambox listens to the file — audio or the audio track of a video — works out the chords, the key, the tempo and the words, and lays them out as a sheet you can print or read from a stand.

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How it works

Drop in the file

MP3, WAV, FLAC, M4A, AAC, OGG, OPUS or AIFF — and video files too, whose audio track is pulled out and whose picture is never touched.

The analysis reads it

Separation, chords, key, tempo and lyrics are worked out on your machine; nothing is uploaded and nothing waits in a queue.

Print the sheet

The chords land over the syllable they are played on, with the key and tempo in the head, and the export writes it as an A4 PDF.

What you get

  • A4 PDF: chords over the lyrics, key and tempo in the head
  • The same song as a chord grid, if you count beats rather than read lines
  • The stems as WAV files, for rehearsing the part

Where it stops

What comes out is a chord chart, not staff notation: the chords and the words, but no melody line. Lyrics need a vocal and a one-time model download; an instrumental prints its chords alone. Song length is limited by the memory of your machine — five minutes on 8 GB, up to eleven on 16 GB — and a video contributes its audio track only.

Questions

Can it read a video?

Yes. A video is imported as its audio track — the picture is never decoded, so a concert clip works as well as the album file.

Does it work for a live version?

It does, and the differences a live take brings are handled: the chords are read from that performance, and a key change at the end is flagged on the chord track.

What if the chords are wrong?

Double-click any chord and change it, then export again — the PDF carries your corrections, not the model’s first guess.

Related

Live concert to sheet

Drop in a phone video of a live show and get the chords, the words and the key laid over the bars — applause, the step up in the last chorus and all.

Edit the chords

Recognition gets most of it, and the rest is a tap: change any chord by hand, and the chart, the sheet and the export all follow.

Edit the lyrics

The words are editable too — fix a line the analysis misheard, and the correction is what the track, the sheet and the PDF carry.