Peral Music presents two different takes on Boulez’s groundbreaking Messagesquisse, a 1976 birthday greeting for Paul Sacher. This new 2-track eSingle presents one version for solo cello with Astrig Siranossian and conducted by Daniel Barenboim, followed by another arrangement for solo viola featuring Yulia Deyneka and conducted by François-Xavier Roth, who has been closely associated with the Boulez Ensemble ever since the opening of the Pierre Boulez Saal in Berlin.