Xi;

Like Xi and Fantaisie mécanique, the Double Concerto
for prepared piano, percussion, and ensemble (2002) was
written for the Paris-based Ensemble intercontemporain.
Its central compositional idea is that of combining its two
antagonists soloists and ensemble to create a single
homogeneous body of sound. Unsuk Chin uses the idea of
metamorphosis to realize a coherent musical texture that
is nonetheless constantly growing, and the sonorities and
complex rhythmic layering of the piece are to some extent
influenced by Balinese gamelan music.