Identical signatures always primarily included in TV intro music? (3,4)
I believe the answer is:
the same
'identical' is the definition.
(I've seen this in another clue)
'signatures always primarily included in tv intro music?' is the wordplay.
'primarily' suggests taking the first letters.
'included in' is an insertion indicator.
'intro' says to take the initial letters.
'music?' becomes 'heme' (I can't justify this - if you can you should give a lot more credence to this answer).
The initial letters of 'signatures always' is 'sa'.
The first letter of 'tv' is 't'.
't'+'heme'='theme'
'sa' inserted into 'theme' is 'THE SAME'.
Can you help me to learn more?
(Another definition for the same that I've seen is " Identical - unchanged".)