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Changelog

What's new in Flat. New features, improvements and fixes, newest first.

We ship more than we list here. This page keeps the changes worth knowing about.

Building on the API or the Embed SDK? See the developer changelog

In September

48 smaller changes
Only this area
August 21·New·

Loop mode, and playback that picks up where you stopped

A selected passage in the Flat editor looping, with the loop handles around the bars and the loop button active in the header

Select a passage, press L, and it repeats until you tell it to stop, while the notes stay editable, so every change lands on the next pass. Loop mode is free on every plan.

  • Three ways to start a loop: select bars and press L, choose Loop from the selection menu, or press the loop button in the header to loop the bar your cursor is in. Drag the handles to widen or tighten the range, even while it plays.
  • The notes stay editable. Click a note as it plays, change it, and hear the result the next time round. Loops also work over a synced YouTube, Vimeo, SoundCloud or uploaded recording.
  • Playback starts from your cursor, not from the top. Stopping keeps the position: Space plays from the cursor, Shift + Space resumes exactly where the music stopped (press and hold Play on mobile). Going back to the start moves the cursor while stopped, and restarts playback while playing.

Available in the new editor on the web and on the new mobile toolbar on iOS and Android. Embedded scores can loop too, through the embed API.

August 4·New·

Import a PDF or photos in the desktop app

A printed score becoming an editable score in Flat

The Mac and Windows apps can now turn a PDF or a photo of sheet music into an editable score, with the same review step as the web.

  • Import without leaving the app. Pick a file, check what the scan read, and open the score.
  • Buy AI credits inside the app on the Mac App Store, so an import does not stop for a trip to the website.

Also in August

29 smaller changes
Only this area
  • Aug 7Improved

    A new version of our in-house model now powers every PDF and photo import, focused on how tuplets are printed on the page. - Implicit tuplets are now…

    Read more
  • Aug 31Fixed
    Short text fragments no longer turn into instrument names
  • Aug 31Fixed
    Directions such as "p legato" are no longer sung as lyrics
  • Aug 31Fixed
    A pickup measure in a single-part score keeps its notes
  • Aug 31Fixed
    A cover or license page before the music no longer supplies the title
  • Aug 31Fixed
    Tempo marks are no longer mistaken for a title, a lyricist or a measure number

    Metronome equations and tempo words such as "poco allegro" stay where they belong.

  • Aug 31Fixed
    Composer and lyricist credits are read in more layouts

    Credits in Polish and Spanish, wrapped over two lines, split across text boxes, or set in the music font are now recognized.

  • Aug 31Fixed
    Chord symbols are read more precisely, including diminished chords, sevenths and bare roots
  • Aug 31Improved
    Rehearsal marks are recognized on photos, not only on clean scans
  • Aug 31Improved
    More chord-symbol fonts are recognized in PDFs
  • Aug 7Fixed
    Smaller fixes to lyrics, chord symbols, instrument names, tablature, pickup measures, and score details
  • Aug 7Fixed
    Rehearsal marks attach to the measure they open rather than to the nearest note
  • Aug 7Improved
    Korean scores: Hangul titles and Korean performance directions are now recognized
  • Aug 6Improved
    An import left on the review step now finishes on its own after 24 hours

    If you close the review screen or lose the tab, the import no longer waits forever: after a day it continues with the title and instruments it detected, and the score lands in your library.

  • Aug 6Fixed
    Scores whose staff layout changes mid-piece no longer lose staves or whole systems
  • Aug 5Improved
    Instrument names are identified more reliably, including Japanese names, transposition keys and numbered parts
  • Aug 5Fixed
    PDFs that contain both a lead sheet and a piano arrangement are split into the right parts
July 15·New·

Import a PDF or photos into an editable score, with a review step

Importing sheet music from a PDF or a photo has a new flow on the web app, built on Flat's in-house recognition engine. It replaces the previous PDF import for everyone.

  • Pick the pages you want. Upload a PDF or several photos, then keep only the pages that contain the music. Each page you keep uses one credit.
  • Follow the recognition as it runs. A progress bar shows where the scan is, page by page, and you can keep using Flat while it works.
  • Review before the score is built. When the engine is unsure about an instrument, it asks you to confirm the title and the instruments it detected, with the part names printed on the page shown next to each one. When every instrument is certain, this step is skipped.

Available in Flat and, for teachers and administrators, in Flat for Education. The new flow comes to the iOS app in the upcoming weeks.

July 1·New·

Undo, redo and other editing gestures on touch screens

A two-finger tap on the score to undo, then a three-finger tap to redo

Your fingers can do more on the score. These gestures are on for everyone editing on a phone or tablet.

  • Undo with two fingers, redo with three. Tap anywhere on the score with two fingers to undo your last change, three to redo it, without reaching for a button.
  • Fit the page with a two finger swipe down. In page mode, the score resizes so a full page width fills the screen.
  • Double tap an instrument name to zoom to it, so you can work on one part without losing your place in the score.
  • Drag a note to move it. Drag sideways to put it on another beat, or up and down to change its pitch, with a magnifier above your finger so you can see the note you are aiming at.

Also in July

33 smaller changes
Only this area
  • Jul 29Improved

    A new version of our in-house model now powers every PDF and photo import, with 22% to 51% fewer errors on our scanned sheet music benchmarks. The gains are…

    Read more
  • Jul 24Improved

    An improved version of Flat's in-house model now powers every PDF and photo import, in particular: - Multi-voice passages with shared rests and invisible rests…

    Read more
  • Jul 10New

    Flat's OMR engine is now available programmatically through the developer API. Send PDFs or photos, follow recognition progress, review the detected…

    Read more
  • Jul 31Improved
    Import a PDF or photos on Android with a review step before the score is built

    The import flow on Android was rebuilt on the same engine as the web app: pick the pages you want, check the detected title and instruments, then let the scan finish while you keep using the app. Opuscan for Android gets the same wizard.

  • Jul 29Fixed
    Piano right hand no longer lands on the bass staff

    On some piano scores the second voice inherited the staff of the previous one, so right-hand notes were written on the bass staff.

  • Jul 23Fixed
    Fewer dropped notes on dense pages, and no more rhythm slashes after a triplet passage

    Busy systems that continue from the previous line no longer lose notes, a part that mixes triplet and plain systems no longer turns into rhythm slashes halfway through, and slurs and articulations placed on a double stop stay on the chord.

  • Jul 21Improved
    Clef changes in the middle of a measure are now recognized
  • Jul 20Improved
    Lyrics and text are recognized in more languages, including Vietnamese, Thai, Arabic and Hindi

    Text recognition now covers Vietnamese, Thai, Arabic, Persian, Urdu, Hindi, Marathi, Nepali, Bengali, Tamil, Telugu and Kannada, plus 24 more Latin-script languages such as Czech, Hungarian, Croatian and Lithuanian. Words with accents and diacritics are also kept instead of being discarded as unreadable, and Hebrew text embedded in a PDF is no longer thrown away.

  • Jul 12Improved
    Instrument names are matched more reliably, including band section labels and Chinese scores

    A bare "Horn" now resolves to the French horn instead of the English horn, "Alto" and "Tenor" on a band part to saxophones, brass band basses to the tuba, and a percussion clef misread on a pitched part is corrected. A vocal line that enters after a piano introduction is recognized as a voice instead of a second piano. On Chinese scores, the 詞 and 曲 labels route the names to lyricist and composer, and bilingual lyrics keep every verse. Changing the instrument of a drum part in the review step keeps the drum kit.

  • Jul 10Fixed
    Fixed some multi-voice passages where the two voices share a rest
  • Jul 10Improved
    Courtesy (cautionary) accidentals are now recognized
  • Jul 10New
    A photographed two-page book spread is split into two pages

    Photograph an open book and the import reads the left and right pages one after the other, instead of as one wide page.

June 16·New·

Two measure repeats

A rhythm part with a two measure repeat symbol spanning two bars

Rhythm parts often repeat two bars at a time rather than one. You can now write that with a proper two measure repeat symbol, instead of copying the bars out by hand.

  • Add it from the notation tools and the symbol spans the two measures it stands for, drawn the way a player expects to read it.
  • Playback follows the repeat, so what you hear matches what is on the page.

It sits alongside the single measure repeat that was already there, and works the same way.

June 16·New·

A tempo

A staff with a ritardando followed by an a tempo marking above it

After a ritardando or an accelerando, a score needs a way to say "back to the previous tempo". A tempo is now a marking you can add.

  • Insert it from the notation tools and it is drawn above the staff, where a player expects to find it.
  • Playback goes back to the tempo in force before the change, so a rit. followed by a tempo sounds the way it reads.
  • It survives MusicXML, both ways, so the marking is still there when a score moves between Flat and other notation software.
June 16·New·

Find any tool by typing what you want

Quick search open over a score, with results for a typed query

Quick search puts every editor tool one keystroke away. Open it, type what you want, and press Enter: no hunting through the toolbar for the panel it lives in.

  • Search by what you call it. Type "triplet", "repeat bar", "crescendo" or the name in your own language, and the right tool comes up. It understands a wide range of names for the same thing, in 21 languages.
  • Your recent actions come first, per score, so the tools you are using on this piece stay at the top of the list.
  • Tools you cannot use right now are shown as unavailable, with the reason, instead of quietly doing nothing.
  • It works from the keyboard end to end, with full screen reader support.

Available in the new editor toolbar.

Also in June

22 smaller changes
Only this area
  • Jun 23Improved

    We've improved how scanning reads the layout of a page. Imports of PDFs and photos now produce cleaner, more accurate scores, especially on complex layouts: -…

    Read more
  • Jun 15Improved

    Every PDF and photo import is now processed by Flat's own in-house model. This release is a major new version focused on transcription accuracy: musical…

    Read more
  • Jun 1New

    We're rolling out Flat's own AI model for PDF and photo import, designed and trained in-house to replace the third-party engine used at launch. Owning the…

    Read more
  • Jun 24Improved
    Chord symbols: fixed-Do names (REm, SIb, LA7), stacked extensions and accidentals are kept

    Chord symbols written with solfège names are recognized, extensions stacked over the chord ("sus4" under "A7(6)") are folded back onto it, and sharps and flats drawn in the notation font of a digital PDF are read instead of dropped. Chord symbols detected by text recognition are imported as chord notation rather than discarded.

  • Jun 24Fixed
    Page numbers, catalog numbers and attribution lines no longer become titles, credits or measure numbers

    Page and catalog numbers no longer shift the measure numbering, "Words and Music by" and bare "by" lines no longer land in the composer or subtitle, flush-left movement headings go to the movement title, boxed rehearsal numbers are kept, and expression text above or below the staff is imported as a direction rather than as a credit.

  • Jun 24Improved
    Instrument names resolve to the right part more often, in more languages, and transposing parts sound at concert pitch

    Part names printed in the margin or in the header now match the right instrument for organ, choir, percussion and band scores, abbreviations, plurals and ordinals ("1st & 2nd Horns in F") included, and names in Japanese and other languages are looked up too. Dynamics, metronome marks and lyric syllables next to the staff are no longer mistaken for a part name. Transposing instruments are exported with their transposition so they play at concert pitch.

  • Jun 23Improved
    Jazz scores, when correctly detected, now apply a jazz chord style and handwritten jazz music font automatically
  • Jun 23Improved
    Beams that span rests (for example, note / rest / note) are now supported
  • Jun 23Improved
    Custom beaming patterns are now recognized and preserved on import
  • Jun 15Fixed
    Pickup measures, multi-measure rests and overfull bars import cleanly

    A pickup measure is carried to every part instead of being minted from a lone short bar, printed multi-measure rest counts are read as such, bars that overflow by one duration are corrected from the model's next best guess, and notes with a missing duration inherit the running one instead of disappearing. Unpaired ties and tremolos or noteheads the editor could not load no longer make the whole import fail.

May 22·New·

Flat for Mac and Windows

The Flat desktop app open on a piano and harp score on a MacBook, with the notation panel on the left and the piano keyboard below

Flat now has a desktop app for macOS and Windows: the full editor in a window of its own, free to download, with your library in sync across desktop, web and mobile.

  • Works offline. Write, edit and play back scores without a connection; your changes sync when you are back online.
  • Your scores on every device. With Flat Power, the library you see on the desktop is the same one you open on the web, iPhone, iPad and Android.
  • MIDI input over USB and Bluetooth. Plug in a keyboard and play the notes in.
  • Opens your files. Double-click a score in Finder or Explorer and it opens in the app, not a browser tab.
  • Sign in with Apple on macOS, alongside the sign-in options you already had.
  • Keeps itself up to date. New versions install on their own.

Free to download; a Flat account is only needed to sync. Get it at flat.io/desktop.

Also in May

2 smaller changes
April 24·New·

Swing sixteenths

A score with a sixteenth note swing marking above the staff

Swing is not only for eighth notes. You can now swing sixteenths, for the shuffle and funk feels that the eighth note setting could not express.

  • Pick the unit when you turn swing on, for the whole score or from any point in it: eighths as before, or sixteenths.
  • Playback interprets the unit you chose, so what you hear matches the marking on the page.
  • The marking is written on the score, so anyone reading the part knows how it should be played.

Also in April

2 smaller changes
March 26·New·

A new editor toolbar on the web

The new editor toolbar, moving through the Notation, Instruments and Layout panels

The editor toolbar has been rebuilt, so tools are grouped where you expect them and the score gets more room. It is open to everyone as a beta: turn it on from the banner in the editor.

  • Notation tools are grouped into categories, each with its own keyboard shortcut, shown in the panel as you open it.
  • A layout panel for the whole score. Page and staff size, note spacing, measures per line, measure numbering, and your notation and text styles, all in one place, with non playing instruments hidden in a click.
  • An instruments panel in the sidebar. Rename and configure an instrument without leaving what you are working on, and reorder the score by dragging.
  • Workflow modes. Point the number keys at articulations, ornaments or dynamics, and make a whole pass over the score without leaving the keyboard.

Looking for something older?

Older updates are written up on the Flat blog, release by release.