In Boulez’s artistic framework, the principle of negation serves as a pivotal ideological and compositional foundation, symbolising a generational reset and a radical departure for new music. This chapter delves into Pierre Boulez’s utilisation of poetry and the singing voice as foundational elements in his pursuit of the negational principle. Focused on his concept of ‘reforming’, I examine Boulez’s vocal compositions based on selected poems by René Char, Henri Michaux, Stéphane Mallarmé and E. E. Cummings. Within these compositions, Boulez skilfully juxtaposes traditional elements with serialism, using the serial language to neutralise and negate the established norms. The ‘centre and absence’ principle takes centre stage, serving as Boulez’s fundamental approach to implementing deconstructive processes. This analysis proposes a novel interpretation, presenting this principle as a dynamic force governing the dramatic trajectory of vocal compositions beyond its role as a mere structural device.