Music Department (Imperial Household Agency)
Refers to a specific historical division within the Board of Ceremonies of the Imperial Household Agency. Not a general term for a music club or department.
The Music Department belonged to the Board of Ceremonies of the Imperial Household Agency.
school concert band; wind ensemble club
Compound of 楽 (がく, 'music') and 部 (ぶ, 'department, division'). The term is historically tied to the organization of the Imperial Household Agency.