Closed beta
Describe the chart and the level you want. Apollo writes every part for your band, and won’t hand over anything that isn’t ready to rehearse.
9.5 hours a week. The average that band directors in a Minnesota survey reported working beyond their contracted hours.1
1 Survey of 31 band directors. Minnesota Music Educators Association, 2022 (opens in a new tab)
$1,845 for one song. The Canadian League of Composers’ suggested minimum, in Canadian dollars, to arrange 3–5 minutes for more than 17 staves.2
2 Rates effective 1 January 2026. Canadian League of Composers, arranging rates (opens in a new tab)
Apollo does all four. Kestrel, a 21-part band chart, laid out and checked in under 8 seconds.
Measured from finished lines to checked parts: exporting the score and all 21 parts and running every check. Nine timed runs on one desktop PC, 27 to 29 September 2026, took 6.0 to 7.7 seconds.
Four steps. Bring your brief and any music you have; Apollo writes every part.
Start from a written brief, MusicXML or MIDI, a recording or a video.
You approve the plan: level, sections, keys, tempi, harmony and who plays what. Nothing is written until you do.
| Section | Bars | Key | Tempo |
|---|---|---|---|
| A · Driving | 16 in 4/4 | F minor | ♩ = 138 |
| B · Broad | 16 in 6/8 | A♭ major | ♩. = 58 |
Harmony, A Fm · Fm · D♭ · E♭ · Fm · Cm7 · D♭ · E♭7 …
Apollo drafts each line in concert pitch: the melody first, then the bass, the countermelodies and the pads, each written against the lines already there.
Apollo writes every line out for its instrument: the right key, the right octave, one part for every chair. Same plan and lines, same parts, every time.
Every part is checked before you see it: it opens cleanly, matches the score note for note, and keeps every note in the instrument’s range.
Apollo hears a recording, writes for any ensemble and rewrites any bar you ask it to, in one studio.
Upload a recording or paste a link to a performance. Apollo transcribes the melody, harmony and rhythm section; once you confirm what it heard, it arranges the piece for your players.
“Give bars 17–20 of the melody to the horns.” “Move the B section up a whole step.” Apollo rewrites only what you asked for and checks every part again.
Concert band, jazz band, pit orchestra, pop and show band, string orchestra: Apollo knows each one’s instruments, ranges and conventions.
Read the score and hear it before your band does, with a cursor that follows and every check beside it, in your browser.
Nothing reaches you unchecked. Every part is checked before you see it, and if one fails, the whole score is refused, with the fix.
Valid MusicXML that opens in Sibelius, Dorico and MuseScore.
Every part agrees with the full score, note for note.
Nothing sits where the instrument can’t play it.
A part that can’t be played as written stops the export, with the fix beside it. Everything else Apollo notices comes with the score.
The plan is yours to read and edit, and every part is built from it, never around it.
The full score, one file per part, a lead sheet and MIDI, ready for Sibelius, Dorico or MuseScore.
A short concert opener in two sections: a driving A in 4/4, then a broad B in 6/8.
More arrangements are on their way, for every level and every kind of ensemble.
Apollo is in closed beta. Join the waitlist, and we’ll email you when there’s a place for your band.
No. You approve the plan before a note is written, and you finish the score where you already work: Sibelius, Dorico or MuseScore. Apollo takes the hand work off your desk, not the musical decisions.
Apollo writes standard MusicXML and MIDI: the full score, one file per part and a lead sheet, ready to open in Sibelius, Dorico or MuseScore.
Yes. Describe the level you want, and it writes to it: the rhythms, the meters and every part’s range follow the level your players read.
A few lines describing the chart. Add a score, a MIDI file, a recording or a video of the music if you have one, and Apollo works from that too.
Ask in plain words: give these bars to the horns, move this section up a whole step. Apollo rewrites what you asked for and checks every part again.
Apollo is in closed beta. Join the waitlist, and we’ll email you when there’s a place for your band, with everything about pricing before you start.
