  Since the 1960s a growing number of composers have engaged with scientific
research and have tried to incorporate their understanding of various models
and theories into their musical works. Among them, H\`ector Parra (b. 1976) has
been particularly impressed by the recent developments of gravitational physics
and astrophysics, namely the part of astronomy which deals with gravity rather
than light. Black holes, gravitational waves (first detected in September
2015), cosmology, or quantum gravity models belong to such fields of intensive
research, bringing surprising new concepts such as the coarse-graining of
space-time, multiverse or holographic principle. In this framework we have
collaborated in the conception of a large piece for soloist ensemble, orchestra
and electronic devices, which tries to transpose gravitational phenomena into a
new form of contemporary music.
