What exactly is textural density??

Textural density to me means palpable,  having body, 3 dimensionality. I get this “feel” in the lower frequencies as heft, weighty slam .   In the midrange as layering , having mass.  Not so obvious in upper frequencies but discernible as having mass even if the sounds float between speakers.  One way of experiencing this is to compare different systems.  Once you pick it you will understand it’s meaning 

....one thing that struck me over the " a race car with fresh, sticky tires " comment is the fact that cold 'fresh, sticky tires' on a race car can fail to stick in curve six at speed just as fast as the hot worn ones you're just about to pit with....

'Textual Density' in music, Yes, can be thought of as describing a well recorded passage and/or series of same from an outstanding musician/singer or group of same, be it a solo or group performance.  It can also be applied to an instrument in the hands of Yo-Yo Ma, always a delight to hear....

In the case of the reviewer....likely more to the tactical qualities of his brain matter and his noted penchant for 'prose' postures.  We can perhaps assume that he may be paid by the word count and how glossy something is by such flourish pronouncements....

Just an cynical aside, mind you....carry on....;)

"....one thing that struck me over the " a race car with fresh, sticky tires " comment is the fact that cold 'fresh, sticky tires' on a race car can fail to stick..."

Good catch, even if I say so, as that was my thought in my first post here. I did not elaborate as I thought that millercarbon would catch that detail.

 "As far as tires go, maybe it is not the best comparison."

www.liveabout.com/musical-texture-2455907

There.

i am reminded of the words of english poet adrian mitchell, who commented, " Most people ignore most poetry because most poetry ignores most people." most people ignore most audiophilia because most audiophilia ignores most people, many elites of various stripes place their thinking a cut-above that of the "great unwashed" rather than try to spread their love of music in a practical way, to those outside of their camp.