Sevenths chords: Tertian harmonization of C major scale, Major thirds tuning for guitar
<p>Sevenths chords in C-major and A-minor keys
</p><p>Tertian harmonization of C-major and A-minor scales
</p><p>Stacking thirds: A-Aeolian and C-Ionian modes
</p><p>Major-thirds guitar-tuning Ab-C-E-Ab-C-E/G#-C-E-G#-C-E
</p>
by Kiefer Wolfowitz
<a href="//commons.wikimedia.org/wiki/User:Kiefer.Wolfowitz" title="User:Kiefer.Wolfowitz">Kiefer.Wolfowitz</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>