Below are the score excepts with audio clips from the ProSession article in DownBeat (Oct)

Sheet of music with musical notes and annotations, including 'bass ostinato.'
Music sheet with musical notation and annotations outlining different main motifs, tri-chords, tetracords, pitch transpositions, and rhythmic displacements.
Sheet music with musical notes and chords, including Ab pedal, Am, Db, G, and F7, written in standard notation on a musical staff.
Sheet music titled 'CODA - Recapitulation' with musical notes, annotations, and chord labels for piano and other instruments.
Musical notation sheet music showing various chords labeled as Tetra chords I, II, III, and Tri chords I, II, III, with notes written on staff and a treble clef, including a C Lydian add b9 chord. 
Examples 1&3

bass ostinato and A section

Erebus - A section
Bruno Råberg - Evolver
Example 4

solo section and song form

Erebus solo section - Walter Smith III
Bruno Råberg - Evolver
Example 5

Coda to Fine

Erebus - CODA to Fine
Bruno Råberg - Evolver