Latest sacking in foreign office is off the scale and everyone will hear about it (8)
I believe the answer is:
falsetto
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'latest sacking in foreign office is off the scale and everyone will hear' is the wordplay.
I cannot really understand how this works, but
an anagram of 'latest' is 'alsett' which is within the answer.
'foreign office' could be 'fo' and 'fo' is present in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
'about' is the link.
Can you help me to learn more?
(Other definitions for falsetto that I've seen before include "High-pitched male voice" , "Unnatural voice" , "Let fatso have voice above natural range" , "Unusually pitched" , "Way of singing at higher pitch" .)