2’s work, used originally in adaptation of Cinderella (5,2,4)

'2's work' is the definition.
The definition suggests a singular noun which matches the answer.

'used originally in adaptation of cinderella' is the wordplay.
'originally' says to take the initial letters.
'in' means one lot of letters goes inside another.
'adaptation of' indicates anagramming the letters.
The first letter of 'used' is 'u'.
'cinderella' with letters rearranged gives 'clairdelne'.
'u' inserted within 'clairdelne' is 'CLAIR DE LUNE'.

Can you help me to learn more?