Song One can read OnSong files. The supported file formats include the native OnSong files and ChordPro or PDF files generated by OnSong. (See 'Avoid exporting files in the PDF format' below.)
  • Song One automatically adds chord diagrams to imported songs that include chords. You may disable this feature or specify the tuning/string instrument to be used to generate the diagrams in Song One's settings/preferences.
To import a song tap/click on the inward pointing arrow in the upper left corner of Song One's main window. (If the library panel is not visible tap/click on the three lines in the upper left corner of the screen.)
Choose 'Import File' to select and add a single song saved by OnSong in the ChordPro, the PDF format or its native text-based file format. (See text-based files and PDF files to learn how added songs are transformed.)

Importing Song Catalogs

Use the 'Import Folder' option to add a collection of songs in the OnSong file format to your Song One catalog. Song One examines all the compatible files in the selected OnSong folder (including its subfolders) and imports them.
  • Exporting songs from OnSong:
  1. 1.
    Create a new 'Set' in OnSong and add the songs you wish to export.
  2. 2.
    Tap/Click on the share icon in the upper left corner.
  3. 3.
    Select 'Export' in the pop-up list.
  4. 4.
    Select 'OnSong' (or 'ChordPro', or 'PDF') as the export format.
  5. 5.
    Choose 'Files' as the export location (bottom left corner).
  6. 6.
    Tap/Click on 'Export' (top right corner).
  7. 7.
    Choose (or create) a folder in the directory of your choice and export your songs.
  • Importing songs into Song One:
Choose 'Import Folder' in Song One's import menu and select the folder containing your exported OnSong files.
For maximum efficiency Song One does not change the songs while they are being imported. The individual filenames are enclosed in brackets and used as song titles.
Tap/Click on a song after the import is complete to automatically transform it into the Song One file format. (See text-based files and PDF files to learn how added songs are transformed.)
  • Avoid exporting files in the PDF format:
Text-based PDFs have to be transformed into the native Song One file format to:
Only import songs into Song One in the PDF format if you wish to keep (or add to) your PDF annotations.

Importing OnSong Files Via Double-Click

On macOS you may also import OnSong files into your Song One catalog with a double-click. In order to do so you specify the opening application (Song One) in the 'Get Info' window of macOS:
  • Select an OnSong file (i.e. a file with an '.onsong' extension) with a single click.
  • Hold the command ('⌘') key while pressing the 'i' key to open the 'Get Info' window.
  • Click on the pop-up menu under 'Open with:'.
  • Select 'Song One' from the list.
  • Click on the 'Change All..' button to apply this setting to all OnSong files.
After this setup you double-click on an OnSong file to automatically import it into Song One.