The Sibyl went on to say that one of Aeneas's companions was lying dead on the shore: he must be duly buried and a sacrifice made before Aeneas can carry on with his journey to the Underworld.
The mysterious death was soon explained: as Aeneas and his friend Achates walked back to the beach where they'd left the rest of the party they discovered the body of MISENUS. Misenus had been the Trojan battle-trumpeter, but had foolishly challenged the gods to a competition, with him playing on a hollow sea-shell. Triton, a sea-god, in jealousy drowned him.
Aeneas called the Trojans together and instructed them to build a funeral pyre: they went into the forest and started felling trees.