Anastenaria (Xenakis)

Anastenaria is a triptych cycle of compositions for SATB chorus, male chorus and orchestra by Greek composer Iannis Xenakis. It is, also, one of his most successful early compositions. The three movements of this cycle were composed between 1952 and 1954.
Composition.
After winning the first prize in the Bucharest Music Festival in 1953 for "La colombe de la paix", one of his unpublished works, Xenakis decided to complete the first and the second movement of his "Anastenaria" trilogy, strongly influenced by his Greek roots. He was then studying with Arthur Honegger, Darius Milhaud and, most especially, with Olivier Messiaen, who even made several changes to the original conception of this work.
Conception.
Xenakis claimed that the work is based on a Greek Ritual which, after Constantine the Great, it has been reinterpreted to be a Christian ritual. In this ritual, Xenakis distinguishes up to three different phases:
Xenakis decided not to compose the third phase, in which the steer blessed by Orthodox priest is sacrificed on the 21st of May.
Analysis.
This work consists of three movements, which are often performed individually. The movement list is as follows:
The first movement is largely tonal, unlike the rest of the work. According to Hans Rudolf Zeller, the divisi in the choral parts create musical phenomena of mass resulting from the individualization of the leading voice. It is also based on the principle of overlapping, which makes each voice to proceed from its own melodic, harmonic or rhythmic personality.
The second movement, which treats the evening before the sacrifice, is conceived purely instrumentally; this movement is clearly closer to the style of his contemporaries. However, from this movement on, Xenakis would no longer be constrained by serial techniques, and would explore his musical viewpoints and perspectives by using glissandos and discontinuous pitches.
The third movement was the result of this change, even though it would still not be considered stochastic music, which Xenakis would explore further in "Pithoprakta". However, Xenakis removed completely any trace of serial music and started working to bring his vocal compositions to the same level as that of his instrumental and electroacoustic compositions. According to the composer himself, the third movement was separated from the rest because it was "such a step forward".