So a “6-4” chord is when you have: An interval of a fourth above the bass. And an interval of a sixth above the bass.
What inversion is 6 4 in music?
The Cadential 6/4 Chord Progression (or when is a Dominant Triad in 2nd inversion is not a Dominant Triad in 2nd inversion!) A Cadential 6/4 (pronounced Six Four) Chord Progression is a series of triads (chords) that are played to serve a purpose in the music. These chords sound nice together.
Why is the cadential 6 4 part of V rather than I?
Since it is not quite a tonic chord (although it has all of the notes of the I) nor a dominant, we label it as a Cadential 6/4 (analytical notation: Cad 6/4 or C 6/4) as it is used primarily at the cadence point and functions as a terminal pre-dominant (meaning that it normally progresses to the dominant).