Seem drunk in skimpy pants? It's part of the programme (5,4)
I believe the answer is:
theme song
'part of the programme' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'seem drunk in skimpy pants?' is the wordplay.
'drunk' indicates an anagram.
'in' is an insertion indicator.
'skimpy pants?' becomes 'thong' (type of underwear. I am not sure about the 'skimpy' bit.).
'seem' is an anagram of 'emes'.
'emes' placed inside 'thong' is 'THEME SONG'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for theme song that I've seen before include "Give me Sunshine" , "Characteristic melody often repeated in musical" , "Signature tune" .)