Talk about Desert Island Discs at noon (7)
I believe the answer is:
oration
'talk' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for oration that I've seen before include "lecture" , "A long ceremonial speech" , "Power of speech" , "eulogy" , "Platform speech" .)