All of the Dragon Quest/Warrior games have epic Sugiyama music, with a classical feel reminiscent of Middle Ages music. The themes themselves are just as indelible as their unofficial rivals, the Final Fantasies. The "Castle" theme from DW4 carries some good memories for me.
from Gamey Mixture,
released September 10, 2010
Source: Dragon Warrior (NES), "Tantengel Castle", by Koichi Sugiyama.