951912 for orchestra.

The work was premiered by the Orchestra of Scottish Opera, 30th September 2009. It was commissioned as part of the New Glasgow Harmonies Festival. Much of the composition focuses on sonority and an exploration of the lower register of certain instruments. This is informed by my profound high frequency hearing loss, which has gradually impacted on how I approach some of the standard orchestral instruments.

Dialogue for bass clarinet and bassoon

This work specifically focuses on the lower register of both instruments, an area I've been led to explore as a result of my profound high frequency hearing loss. It was selected for performance following an international competitive call for scores and premiered at the 16th London New Wind Festival, 22nd November 2013. It was performed by Phil Edwards (bass clarinet) and Glyn Williams (bassoon).

Volumetric consequences of particle loss by grading entropy.

Chemical and biological processes, such as dissolution in gypsiferous sands and biodegradation in waste refuse, result in mass or particle loss, which in turn lead to changes in solid and void phase volumes and grading. Data on phase volume and grading changes have been obtained from oedometric dissolution tests on sand–salt mixtures. Phase volume changes are defined by a (dissolution-induced) void volume change parameter (Λ). Grading changes are interpreted using grading entropy coordinates, which allow a grading curve to be depicted as a single data point and changes in grading as a vector quantity rather than a family of distribution curves. By combining Λ contours with pre- to post-dissolution grading entropy coordinate paths, an innovative interpretation of the volumetric consequences of particle loss is obtained. Paths associated with small soluble particles, the loss of which triggers relatively little settlement but large increase in void ratio, track parallel to the Λ contours. Paths associated with the loss of larger particles, which can destabilise the sand skeleton, tend to track across the Λ contours.