Equivalents
C = Do · D = Re · E = Mi · F = Fa · G = Sol · A = La · B = Si.
What is kept
Minors, sevenths, ninths, suspended, diminished and slash chords: E7/G♯ becomes Mi7/Sol♯ and Dm7 becomes Rem7.
Frequently asked questions
Does the alignment with the lyrics change?
No, each chord stays above its syllable.
What about German H?
Not recognised yet; use B for Si.