Mozart's Requiem and Ravel's Bolero Orchestra Hélios Conductor Jean-Charles Dunand Chur Tempestuoso Ravel's Bolero: The Bolero is the most performed classical music work in the world with a performance every 15 minutes. At the time of its creation, the composer had given the copyright to his garden without predicting its success with the general public. This work is the archetype of ostinato. The melody is taken up in turn by the various instruments of the orchestra on a rhythmic formula on percussion. THE REQUIEM OF MOZART: The special circumstances of commissioning this work, and the somewhat tragic conditions of its writing, on the deathbed of its author, feed the legend. In July 1791 Count Walsegg-Stuppach, under the seal of secrecy, commissioned a Requiem from Mozart for his wife, who died in February. The work was postponed in October, due to the overwork experienced by the composer taken by the Clemency of Titus and the Magic Flute. When Mozart died, the Requiem remained an unfinished work. In the final phase of his illness, Mozart had written the entirerequiem of aeternam: from Kyrie to Confutatis, only the vocal parts and the continuous bass were written. For the Lacrimosa, only the first eight bars of the voice and two first bars of the violin and viola parts. Sketches of additional coins have been lost. While he was bedridden, friends come to sing the parts of the Requiem at his bedside. It is possible that it was visited by Salieri. Dynamic and eclectic, the Hélios orchestra has established itself since its creation in 2014. Its artistic director, Paul Savalle, promotes the professional integration of young musicians through orchestral practice. Thus, young graduates mingle with orchestral musicians, conductors and experienced soloists, in optimal working conditions. From baroque to contemporary music, the programs are varied. As for the repertoire, it is both symphonic and choral, the orchestra associating itself with the departmental and regional churs. Thanks to the collaboration of different conductors, the musicians approach a very rich repertoire by expanding their range of interpretations. They all come from the great French conservatories, some belonging to a national orchestra. From the string quartet to the symphony orchestra to the brass ensemble, the orchestra always broadens its audience by modulating its composition. String formation takes place in picturesque locations that cannot accommodate a symphony orchestra, allowing the public to discover a rich architectural heritage. In short, thanks to its variable geometry training, the Hélios orchestra approaches the widest repertoire with a passionate curiosity.