really interesting conversation starting about this stack voicing/dense chord topic. okay so here's a voicing that I personally think sounds quite alright when stacked on top up an octave (keep in mind needs to be played in the mid/upper range of the keyboard). the voicing is A-B-D-F#. what different notes would you add to reinforce this boy here?
you didn't tell me exactly what octave that's in. every octave is completely different, if you're talking about chords (multi-note)