Offer to release new tune in advance (6)
I believe the answer is:
preset
'tune in advance' is the definition.
The definition suggests a verb in its base form which matches the answer.
'offer to release new' is the wordplay.
'offer' becomes 'present' (I've seen this in another clue).
'to release' is a deletion indicator (letters are released or freed).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'present' with 'n' taken away is 'PRESET'.
Can you help me to learn more?
(Other definitions for preset that I've seen before include "Pester (anag.)" , "Adjust beforehand" , "Arranged in advance" , "ready in advance" , "Systems control" .)