. . . Heat, note, theatre putting out first showing a third time? (8)

'heat note' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'theatre putting out first showing a third time?' is the wordplay.
'theatre' becomes 'empire'.
'putting out' suggests deleting specific letters.
'first showing' becomes 'premiere' (I've seen this in another clue).
'a third time?' becomes 'repeat' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'premiere' with 'empire' taken out is 're'.
're'+'repeat'='REREPEAT'

Can you help me to learn more?