A tool for working with ChordPro files. This tool supports transposing, conversion to and from numbers, and printing to PDF. It can also be used as a Rust library.
It is called Diameter because a diameter is the longest chord of a circle.
This tool supports the "chords above" format used by Elvanto. For example:
G G/B Cadd9 G
Amazing grace how sweet the sound
Use the -x flag if the input file may use this format. Use the -v flag to output in the "chords above" format.