What is the fine-grained topic of the following text: These settings – of two less familiar poets of the First World War, often exploring man’s relationship with nature, and a translation of a ninth-century Anglo-Saxon phantasmagorical allegory – encompass a wide range of moods, requiring soaring vocal lines, declamatory authority and the gentlest intimacy, supported by piano textures that can are up in freewheeling virtuosity. Only return the topic.
Exploration of two lesser-known First World War poets' works and a ninth-century Anglo-Saxon translation, focusing on relationships with nature, various moods, vocal requirements, and piano accompaniment.