https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/05%3A_Chromaticism/5.03%3A_Augmented_Sixth_Chords
5.3: Augmented Sixth Chords - Humanities LibreTexts
Aug 29, 2025 - This page discusses augmented sixth chords, which feature an augmented sixth interval between le and fi. It covers Italian, French, and German variations,...
sixth chordsaugmentedhumanitieslibretexts
https://muzland.info/allapp.html?name=C76
Finger notations - C7/6 - major seventh chords with sixth
MuzLand.info: more than a thousand charts of the most usable chords. C7/6 - major seventh chords with sixth
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