Actually containing 11 songs, and they really aren't "demos". Although nearly every number begins with just Cash's voice and acoustic guitar or piano, they are gradually filled in with tasteful electric guitar, bass, and keys, which are too exquisite to be called unfinished demos.
On Music to Mack By, Chavez plays, mixes, cuts, scratches, and manipulates live Porno-grooves. Each enrapturing and embracing the themes and motifs of the movies they were made to accompany. Layer upon layer of obscure and obtuse sounds are welded together, creating insanely innovative music.