The date of this famous letter was 1767, but after Alceste Gluck was still able to use material from earlier work; and the overture to Armide is adapted from that of Telemacco, written in the year of Bach's death (1750).
The elaborate choral writing sometimes rises to almost Hellenic regions of dramatic art; and there is no crudeness in the passages that carry on the story quietly in reaction from the climaxes - a test far too severe for Tannhauser and rather severe for even the mature works of Gluck and Weber.
Burney is of a very different type, and does full justice to the genius of Gluck.
- The difference between decorative and symphonic instrumentation is admirably shown by Gluck.
Between these dates Houdon had not been idle; busts of Catharine II., Diderot and Prince Galitzin were remarked at the Salon of 1773, and at that of 1775 he produced, not only his Morpheus in marble, but busts of Turgot, Gluck (in which the marks of small-pox in the face were reproduced with striking effect) and Sophie Arnould as Iphigeneia (now in the Wallace Collection, London), together with his well-known marble relief, "Grive suspendue par les pattes."
His interest in music led to his acquaintance with the composer Gluck, who became his intimate friend.