Albums:
Ayumi Hamasaki - Songs Meet Princess China Music Orchestra
ayu-mi-x Acoustic Orchestra Side
ayu-mi-x II version Orchestra
ayu-mi-x III Acoustic Orchestra version
ayu-mi-x 4 + selection Acoustic Orchestra version
ayu-mi-x 7 - version Acoustic Orchestra
From Singles:
Days (Acoustic Orchestra version)
GREEN (Acoustic Orchestra version)
TO BE (Acoustic Orchestra version)
fated (Orchestra version)
alterna (Orchestra version)
Dearest (Acoustic Orchestra version)
Voyage (Acoustic Orchestra version)
SEASONS (Acoustic Orchestra version)
Fly high (Acoustic Orchestra version)
Moments (Acoustic Orchestra version)
Crossroad (Orchestra version)
+ SO MANY MORE, too much too list.
You have them on like every single or something, and there are more remix albums with (acoustic) orchestra versions. You even have a lot of fan made orchestra (I know that there's even a Rule (Orchestra) version.