Negredo netted his second from the spot before Manu del Moral completed the rout to set up a last-four clash with either Atletico Madrid or fierce rival Real Betis.
"We're delighted Deacon Manu has finally put his hand up for Fiji, look around there's no better tight-head prop than him available to represent Fiji, " said Fiji selector Mosese Taga after picking the prop in his squad.
The most impressive mash-up may well be the title track, courtesy of Cameroon's favorite son, Manu Dibango, along with Le Grand Kalle and Cuban flutist Don Gonzalo.