MIDI file
Load a .mid file and press play. Speed from 0.5x to 1.5x. Drag on the piano roll to jump around. Space is play and pause.
OrbKord names the chords you play.
It runs in the browser. Plays MIDI files, listens to your MIDI keyboard and turns piano recordings into MIDI.
Hold notes. It tells you the chord.
OrbKord shows the chord name, the inversion, the voicing type, the intervals and how every note is spelled. The notes go on a grand staff too. Sustain pedal counts.
- 63 chord shapes. Triads up to D♭7♯5♯9♭13.
- Exact, jazz or simple names. One click to switch.
- Spelling follows your key. 15 keys, so you get F♯ or G♭ where it belongs.
- Bass split. Read the low notes as a slash chord, or keep them apart.
We ran Memories of Paris through it. It found 164 different chords. Some of them:
Examples: D flat minor 9, G minor 11, D minor 9, D flat 7 sharp 5 sharp 9 flat 13, A 13 sus 4, F sharp minor 6/9 and more.
Five ways to put notes in
MIDI keyboard
Plug it in and play. Sustain pedal works. Chrome or Edge, because those browsers have Web MIDI.
Laptop keys
No keyboard with you? Play on the computer keys.
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ZXoctave
Piano recording
Upload an MP3 or WAV of piano. You get MIDI back and it opens in OrbKord.
How Audio to MIDI worksYour phone, as a breath controller
Pick the Air brass sound. Scan the QR code with your phone and blow into its mic. Harder breath, louder and brighter brass. Or use the touch pad on the phone.
Play one note. It puts a chord under it.
Turn on Harmonise and play a melody. Every note gets a voiced chord. Stay in the key, or go outside it. Choose chords with fewer notes or more notes.
Voicing slider goes from tight to open. Velocity and humanise for your notes and for the chords separately.
Sequencer
Record a melody. OrbKord turns it into a looping chord progression.
- Progressions
- 190 in the packs, 108 major and minor, 82 modal. Or let the rule engine pick
- Mood
- 22 to pick from. Nostalgic, Dark, Romantic, Triumphant and others
- Comping
- Block chords, Pop, Pop 2, Soul, Hip hop
- Length
- 4 or 8 bars, 1 chord per bar or per half bar
Record Take keeps your own playing, melody and chords, as a MIDI loop. Export MIDI and drop it in your DAW.
Not only 12 notes
Set the tuning to 19, 31, 41 or 53-EDO, or load your own Scala .scl file. The staff writes real microtonal accidentals. The hex keyboard gives you one key for every step.
- Quarter-tone sharp
- Three-quarter-tone sharp
- Quarter-tone flat
- Three-quarter-tone flat
- Flat, one arrow up
Glyphs. Stein-Zimmermann quarter tones for 31-EDO. Helmholtz-Ellis arrows for 41 and 53-EDO. Drawn with Bravura, the reference font for music notation.
Export. Export MIDI in a microtonal tuning writes MPE: one channel per note with pitch bend. Set your DAW track to MPE and the bend range to 48.
Chord names. These stay in 12-tone, so you still get a name you can read.
Look at it the way you play
The whole file under the keyboard. Click or drag to scrub.
Guitar neck with every position of the chord. Standard, Drop D, DADGAD, Open G, Open D, All fourths, half step down, or your own tuning.
Fold the roll to a slim bar. More room for the keys, note names on top.
Light or dark. The chord panel and staff switch too.
Sound and export
Sounds
Synth, Rhodes, Grand piano and Air brass. The Rhodes and piano are sampled with 6 velocity layers. Reverb is a real convolution reverb.
MIDI
Export MIDI saves what you loaded, recorded or harmonised as a .mid file. Microtonal tunings export as MPE.
Video
Export plays your MIDI file from the start and saves a video of it. 1920x1080, up to 60 fps, with audio. MP4 when the browser can, WebM when not. Capture records live playing the same way.
Audio to MIDI for piano
Upload a recording. MP3, WAV, FLAC, M4A or OGG, up to 30 minutes and 50 MB. Pick what is on it:
- Pure piano
- Just piano. 1 credit for every started 10 minutes.
- Piano with noise or voices
- Singing, talking, background noise, light instruments. OrbKord pulls the piano out first. 1 credit for every started 6:40.
You see three steps: Uploading, Transcribing, Done. The MIDI opens in OrbKord. It also stays in My transcriptions, so you can load it or download it later.
Piano only for now. Guitar, voice or full band will not give you good MIDI.
Pricing
OrbKord
$15 one time
7 days free first. No card for the trial.
- Everything on this page
- 10 Audio to MIDI credits included
- No subscription. Pay once on Gumroad, it stays yours.
Audio to MIDI credits
| Pack | Price | Each |
|---|---|---|
| 5 credits | $5 | $1.00 |
| 10 credits | $8 | $0.80 |
| 15 credits | $10 | $0.67 |
A 4 minute piano song costs 1 credit. A failed transcription gives the credit back by itself. Credits never expire. Buy them inside the Audio to MIDI window.
Why it costs this
Chords, harmoniser, tunings and export all run in your browser, on your computer. That costs us almost nothing per user, so the app is one price, once.
Audio to MIDI is different. Every recording runs on a rented GPU server and we pay for each minute. That is why it is credits. Piano with noise costs more because the piano gets separated from the rest first, which is extra GPU work.
Discount codes show up sometimes in the Bleu Orb YouTube videos.
FAQ
What do I need to run it?
A browser. Chrome or Edge if you want to use a MIDI keyboard, they have Web MIDI. Video export works best in Chrome. Nothing to install.
Do I need a MIDI keyboard?
No. Load MIDI files, or play on the computer keys: A to ; play notes, Z and X change octave.
What is different in the free trial?
The trial is 7 days. It has almost everything. The full version adds 14 altered dominant chord shapes (like 7alt and 7♯5♯9♭13), the non-functional harmoniser style and guitar voicing search.
What happens after 7 days?
The app locks until you buy it. $15 one time on Gumroad. Your account and your transcriptions stay.
Is it a subscription?
No. The app is one payment. Only Audio to MIDI uses credits, and you buy those only if you want them.
How do I sign in?
Email and password, or Continue with Google.
How long does Audio to MIDI take?
Usually about a minute for a song. If the server cannot start your file within 4 minutes, you get the credit back and can try again.
What if the transcription is wrong or fails?
If it fails, the credit comes back automatically. For best results use a clean piano recording. Use Piano with noise or voices when there is singing or talking.
Can I use my own tuning?
Yes. Load a Scala .scl file. Notes snap to the nearest step, or use the 1 key per step mode on the hex keyboard.
Does microtonal MIDI export keep the tuning?
Yes, as MPE. One channel per note with pitch bend. Set the track to MPE and the bend range to 48 in your DAW.
Can I make videos for YouTube with it?
Yes. Export renders your MIDI file as a 1920x1080 video with audio.
I found a bug or want a feature.
Email rpeter3335@gmail.com or post it in the Discord.
Questions, bugs, ideas
Write to rpeter3335@gmail.com for support or feature requests. Or come to the Discord and talk to other people using it.
Join the Discord
