Movie format: a year following Britpop band (3-3)
I believe the answer is:
blu-ray
'movie format' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'a year following britpop band' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'year' could be 'y' and 'y' is found in the answer.
'band' could be 'blur' (English band) and 'blur' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for blu-ray that I've seen is " Optical disc for storing high-definition video".)