 The root note is associated with a sequence of intervals, beginning with the unison interval (C,C), the octave interval (C,C), the perfect fifth (C,G), the perfect fourth (G,C), the major third (C,E), and the minor third (E,G); in particular, this sequence of intervals contains the thirds of the C-major chord {(C,E),(E,G)}.Flattening this open tuning's open-note E to E changes the open chord from C-major to C-minor, so producing the cross-note tuning 
 {
\clef "treble_8"
\time 3/4
2.4
4
4
4
4
4
2.

which enables one-finger minor chords.