Cadential Six-Four	Theory Things William Wieland
Old Days	Today
The first half note, the cadential six-four chord, embellishes and resolves to the second chord. In the “old days”, these two measures required 3 Roman numerals. Today, music theorists consider these two measures to include only two harmonies, dominant and tonic.
A few years ago, the following t-shirt was designed and sold by the Society for Music Theory with the marketing hook, “A gentle reminder that I64 isn’t the friend it seems to be.”
The following harmonic progression perhaps more clearly demonstrates a similar embellishment and resolution.