I’ve been wondering for a while about the main differences between the so called block chords, and the also famous Barry Harris diminished voicings.
I use Barry Harris voicings all the time and the idea is to constantly alternate between the Maj6/Min6 chord if we harmonize chord tones (1-3-5-6) and the relative dominant(7b9) chord if we harmonize other tones that do not belong to the chord.
Personally I love this voicing and I use it all the time, even though it only works (from what I am concerned) for Major and Minor chords but cannot be used, for example on dominant 7s. Or for example I could not harmonize a non-chord tone while maintaining the quality of the chord (let’s say I would like to harmonize the F over a EbMaj9).
So from here I guess that there’s the (more extended) idea of block chords (locked hands and drop 2s): if I want to harmonize a EbMaj9 with the 9th on top then I could hit F - G - Bb -D -F (omitting the tonic, using locked hands) or by using the tastier drop2 scheme we would use the voicing D-G-Bb-F.
Is it all of this kinda correct? 😀