“…The mural presents an anti-score, a music from the void, a metaphysical music represented in silence. Oteiza can collect the plastic-musical duality in the same sculptural work, where the music does not sound, but exists, like the worldly music of the Pythagorean theory [16]. In the musical fabric [17] that this score shows, some musicological keys could be found, as a "composition anatomy" [12], which are represented in textural values such as height, axes, simultaneity, time, sequence, tension, rhythm, proportion, movement, developments, hierarchies, etc.…”