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Horlock was certainly the busier of the two keepers, though, and he was forced into making a number of saves to keep the score down before the Canaries eventually doubled their advantage through Jerome's second of the night.
Norwich continued to dominate for the remainder of the half and, despite changing their entire team at the break, they picked up where they left off after the restart and soon had a third goal through Andreu.
That strike sparked a flurry of goals for the visitors as they scored six in the space of 23 minutes, with Gary Hooper making it 4-0 from close range just minutes after Andreu's strike.
Gary O'Neil was the next to get in on the act when he reacted quickest to a loose ball to lash home, while Andreu then completed his quickfire hat-trick with a firm finish from Hoolahan's pass.
The scoring was not over there, however, as the visitors made it nine for the evening with five minutes remaining when O'Neil doubled his personal tally.
The result means that Norwich have now scored 17 goals and conceded none in their two pre-season ties so far.