Georges Lentz’s large and ongoing cycle of works “Caeli enarrant…”, written for various combinations of string instruments, percussion and woodwind, reflects the composer’s fascination with astronomy as well as his spiritual beliefs, questions and doubts. Born in Luxembourg, but an Australian resident since 1990, Georges Lentz has developed a highly idiosyncratic musical language which succeeds in communicating deeply held convictions about the nature of the universe. Lentz’s craftsmanship, always of the highest level, is wholly at the service of the spiritual programme which pervades his entire output. The bold gestures of two pieces from the early 1990s are in marked contrast to the serenity of the more recent works Birrung and Nguurraa.