High-ranking officials, orchestra members? (5)
I believe the answer is:
brass
I believe this is a double definition.
'high-ranking officials' is the first definition.
(as in the phrase 'top brass')
'orchestra members?' is the second definition.
(Other definitions for brass that I've seen before include "One making a living from tricks" , "Zinc-copper alloy - cheek" , "Alloy of copper and zinc" , "Impertinence" , "Descriptive of 7's instrument" .)