Well the FC house items include violas family (cello), harp, harpsichord, and brass horn, though there may be others. We have the lyre-like instrument of the Artemis Bow, and I would like to believe there are wind instruments as well, since I tried to write them into Ancel's background. We also hear certain thematic elements such as choirs and cathedral organs in Coerthas, so I imagine hymns play a pretty large role in the Holy See. Horns, concertinas, and possibly reed instruments seem more prominent in Limsa Lominsa than elsewhere, Costa del Sol features strummed strings and perhaps something akin to an ocarina. To me it would be acceptable to consider these types of instruments as lore-friendly.
I'm far from a lore expert though.
I'm far from a lore expert though.
