"The piano is tuned to a selection of overtones from the fifth octave of the harmonic spectrum of C. All octaves are tuned in the same scale....The lowest C (33 Hz.) can be used to tune the scale by ear. In succession, touch the nodes producing the 3rd, 5th, 7th, 11th, 13th, 17th, [and] 19th partials. Then G, D; D, A; E, B; [and] B-flat, F; are just (beatless) fifths."[2]
Movements
Alarum
Blues
Etude
Song
Toccata
Alarum is a Shakespeare era stage direction indicating "a grand entrance" and an archaic word for a call to arms, so "Alarum" is a fanfare.
"Etude" is a study in serial technique and six-against-five polyrhythms in which Johnston indicates "blur with pedal". This, "clues us in that the linear intricacies are only part of the story here: the amazing swirl of overtones resulting from an atonal application of this tuning are of equal importance."[2]