Test cheese crackers, including note to describe background (3,3,5)
I believe the answer is:
set the scene
'describe background' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'test cheese crackers including note' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'test' is 'sett' which is within the answer.
'note' could be 'n' (abbreviation) and 'n' is found in the answer.
an anagram of 'cheese' is 'hescee' which is present in the remaining letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).
'to' is the link.
Can you help me to learn more?
(Other definitions for set the scene that I've seen before include "Write a prologue, for instance" , "Put things on stage" , "Prepare the ground" , "as one working with props might" , "Fill in the background (to an event)" .)