- Year of composition: 1989
- Duration: 7:42
- Instrumentation: string quartet
- Commission: Almeida Festival
The rather pedantic title of this piece is of my coinage, made from the Greek words for height and tone, although I am not so sure whether such a neologism conveys the meaning of ’raising sounds’ as was my intention.
This short piece for string quartet is characterized by an intentional limitation in the use of its sound materials. The performers are instructed to play every sound in such a way that, after beginning each note at the stated pitch, they have immediately to start raising it gradually, until they reach a pitch one quarter-tone higher by the end of its notated duration. This pitch raising in each individual glissando should be an interval of a quarter-tone or a little more, but in any case less than a half a tone.
- 1989, Arditti Quartet • Almeida Festival, London (England, UK)