First performed at West Road Concert Hall, Cambridge, by the Cambridge University Concert Orchestra.

27th February 2016

Programme Note:

Within ‘On the Heavens’, Aristotle posits the existence of two cosmological orbs; the sublunary sphere, which encloses the four terrestrial elements, and the celestial sphere of the heavens, which contains Aether: the fifth element.  ‘Between the Spheres’ explores the musical possibilities suggested by this system. 
The piece positions the listener as an observer at the boundary between the sublunary and celestial spheres, each of which is afforded individual musical treatment. Throughout the piece the music of each sphere is sounded concurrently but with oscillating priority, as though the attention of the observer is in constant flux. These musical ideas germinate from the same seed but are distinct by the nature of their development. The sublunary music maintains a continual forward trajectory and is only interrupted by its tendency to fracture or become corrupted. In contrast, the music of Aether and the celestial sphere is cyclical and self-referential, reflecting the incorruptible eternity of the heavens.  These musical tendencies are informed by Aristotle’s own descriptions of the motion of terrestrial and celestial elements: the former travelling linearly whilst the latter follow circular paths. A finale unites the spheres in concord, but the stability is fleeting. The piece fractures at the last, leaving just the slowly fading ‘aethereal’ music. 

Chris Mortlock (2016)


Between the Spheres

Christopher Mortlock