passaggio [for solo guitar] is part of a series of pieces based on the symbolism of the moon: scores based on a sort of "a sonic moon" that is always changing, mutable, all over its crescent-full-dying circular cycle but also all along the eclipse by crossing the 12 zodiacal signs. A dark moon. A mysterious one. This piece has been composed by using the whole-chromatic-continuum, something possible in the classical guitar mainly by the playing of bendings and glissandi. This way, the performer should exclusively play by thinking about the changing process of the sound: it's not important to obtain pure quarter-tones in bent pitches; also, it's not important to play by looking for a 12-Tone-Equal-Temperament. The performer must look for a continuous transformation of the sound throughout the whole-chromatic-continuum: that's all.
The whole-chromatic-continuum [while the guitar is tuned in a standard way, the whole-chromatic-continuum possible on the guitar is used in the piece due to the structural use of microtonal bends and natural non-tempered harmonics].
Hachè Costa (26 of May of 1980), also known as Borja Costa is a Spanish composer. While he is best known for his works for cinema & TV, Costa has also written a large amount of avant-garde solo vocal works, chamber music & choir, always related to the spectralism and the sacred-minimalism, through graphical-notation scores and improved passages often based in the natural resonance of the overtone series and physical basics on sound, all of them combined with traditional music writing. He has put into music words of poets such as Arthur Rimbaud or Allen Ginsberg, while his guitar music is considered more relevant due to its technical innovations in the classical guitar writings. More info: www.hachecosta.com.