The glorious spectrum of orchestral colour is refracted through a combination of four of the most brilliantly original voices in twentieth century music. Two evocatively-titled unconventional concertos are set against Messiaen鈥檚 glittering primary colours and the effortless symmetry and rich, burnished grandeur of Sibelius鈥 ingenious symphony. Murail鈥檚 2012 work was described by the New York Times as 鈥榓n elemental, shimmering mass of layered sounds, nuanced colours and stacked up harmonies鈥 after its American premiere, and Jan谩膷ek鈥檚 mini-concerto makes the perfect counterweight, sparse, raw, but lyrical and earthily impassioned.