A ChordPro file is a simple text with certain formatting guidelines. It is often used to exchange song sheets between different apps and to publish content on websites. The file format was introduced in 1992 and can have a number of extensions (.cho, .crd, .chopro, .chordpro, .chord, .pro, .cpm, .txt). It allows the formatting of lyrics, chords, chord diagrams and metadata.
To import a ChordPro file click/tap on the inward pointing arrow in the upper left corner of the library panel. (If the library panel is not visible tap/click on the three lines in the upper left corner of Song One's main window.)
Select 'Import File' from the pop-up menu. A file browser will appear to allow you to select the appropriate file.
ChordPro files are automatically transformed into the Song One format when imported. The chord diagrams of the original document are replaced with a set of diagrams created by Song One in the specified tuning.
Song One will auto-format and auto-space the identified chords (square brackets are removed). Non-standard chord symbols will be corrected whenever possible (e.g. 'C2' chords will be reformatted to 'Cadd9' chords to distinguish them from 'Csus2' chords).
ChordPro uses 'directives' to define sections and metadata. Song One converts directives such as 'start_of_verse' and 'start_of_chorus' to labels/tags (e.g. 'Verse', 'Chorus'). Song One's themes are automatically applied to the labeled/tagged sections. (ChordPro directives that specify the font, text sizes or colors are ignored.)
- ccli (license number issued by Christian Copyright Licensing International®)
- duration (song duration in minutes and seconds)
- number ('label/no')
- original key
- pitch tone (notes to be played by a pitch pipe)
- subtitle (short: st - commonly used to specify the artist's name)
- tempo (the song's tempo should be specified in beats per minute/BPM)
- time (the song's time signature)
- title (short: t)
Note: The following ChordPro directives are ignored during import: images, chord diagrams, tap sections, grid sections and columns.