‘Orpheus’ (1821) is a ‘lyrical drama’ that was first published by Richard Garnett in Relics of [Percy Bysshe] Shelley (1862), but the poem was later considered as a joint effort by Percy Bysshe and Mary Shelley, considering the echoes from their respective works. Besides the ‘Orphic mystery’ of who wrote what, critics have identified the various hypotexts of the poem, especially Ovid’s Metamorphoses (books X and XI) and Virgil’s Georgics (IV), although in the traditional way of source studies. This presentation will offer a transtextual analysis of the poem, using Gerard Genette’s Palimpsestes (1832), whose focus on the process of rewriting transcends source studies by highlighting meaningful transformations. For instance, transtextual contaminations of the myth as presented by Ovid and Virgil may be expected, such as references to the Shelleys’ previous works, some of which mythological, like Prometheus Unbound (1818-1820), a rewriting of Aeschylus’s Prometheus Bound and its more or less extent sequels. As a poet, Orpheus is of course a mythological alter-ego for the romantic poets themselves, so that the presence of the Shelleys and their cultural background in the textual analysis will not be omitted.