"Eruption" is a 23-minute-long instrumental piece, a hard rock version of the tale of Orpheus and Euridice and an updated and more modern version of Jacopo Peri's opera "Euridice".An uncredited melody from Monteverdi's "L'Orfeo" opens the suite, and a later segment includes the haunting "Tommy" (after its author Tom Barlage of the Dutch fusion band Solution).