Settings
Operating mode
Tuning
≙ Ref.→low semitones = ?
Registers at Ref. = 440 Hz:
7 Soprano
2 Alto
Registers at Ref. = 220 Hz:
7 Tenor
3 Baritone
0 Bass
Warning: Untuned score!
Help
Time
Overtones
Miscellaneous
About GABC player
Practise Gregorian chant in just intonation.
© 2023-'25 Paul Bretschneider