This is one of my favorite recordings and compositions ever.
I like to play it at volume so I can feel the bass drone in my body. So hair-brushed back style.
I used to use this recording as a litmus test for speaker/monitor evaluation, because the combination of the sustained bass and the female vocal sibilants and vowel formants was a kind of torture test for control of resonances and cone stiffness and excursion, as well as barking in ported designs.