uncertainty principle [2013]

Marc Yeats - Composer

uncertainty principle [2013]

uncertainty principle [the shape distance 9]

instrumentation: 2 flutes | duration circa 11 minutes.

uncertainty principle extends the recent series of unsynchronised works the shape distance, a series of seven pieces constructed somewhat akin to ‘Russian Dolls’ in that each contains the same or similar core material that is ‘enclosed’ by other layers of material.

notes:
The instrumentalists play independently of each other. Music is cued to begin only, with no ‘fixed’ synchronisation between the instrumentalists. Whilst the relationship of each instrument is flexibly placed against its neighbour, care has been taken to calculate potential outcomes of coincidence and variability. To this end it is vital that metronome markings are adhered to as accurately as possible although the composer appreciates that it is the various interpretations and practicalities inherent in the realisation of tempi that contribute to the richly unique nature and interplay of each performance.

There is only one instruction to the players; to begin when indicated and play until their material is finished.
Compositional material is [largely] derived from a series of distant variations that unify all sections with thematic landmarks. Thematic material is audible throughout the piece, bringing cohesion and structure to the work. All the instrumental roles are written to a high degree of virtuosity and most contain extended techniques and quarter-tones. The music itself [through the simultaneous bringing together of these individual parts] forms complex and constantly changing relationships that are frequently wild and sometimes beautiful.

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The score and parts
I have not produced a score for these pieces; difficulties and variables associated with displaying the musical material in vertical alignment as represented in real time are considerable. Each performance will yield different results, interplays, gestural and harmonic references and outcomes. As a result, the material contained within the pieces can only be read via the instrumental parts. Consequently here is no definitive performance of these pieces.

Music in uncertainty principle can only be realised through performance [as opposed to comprehended by reading through a score; this is the nature of the music – it has to be experienced to be ‘known’.

For more information about the shape distance, please click here: