Not on tape or vinyl so Dune Jockeys make a cover (10)
I believe the answer is:
unrecorded
'not on' is the definition.
I can't judge whether this definition defines the answer.
'tape or vinyl so dune jockeys make a cover' is the wordplay.
I cannot really understand how this works, but
'tape' could be 'record' (synonyms) and 'record' is located in the answer.
an anagram of 'dune' is 'uned' which is within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for unrecorded that I've seen before include "Live" , "escaping notice of the bureaucracy" .)