See studies by E. E. George ed.(1972), and R. Unger (1984).
The work is composed of letters from Hyperion to his friends Bellarmin and the writer Diotima. It is set in Greece and deals with invisible forces, conflicts, beauty, and hope.
Italian composer Luigi Nono includes passages from this work in his work Fragmente-Stille, an Diotima for string quartet (1980), as part of the score to be "sung" silently by the performers while playing the piece.