Be off-air, tearing into love about 1979 parody (4,2,5)

'1979 parody' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'be off-air tearing into love about' is the wordplay.
'tearing' is an anagram indicator.
'into' means one lot of letters goes inside another.
'love' becomes 'nil' (love and nil mean zero in cricket and football).
'about' is a reversal indicator.
'nil' backwards is 'lin'.
'be'+'off'+'air'='beoffair'
'beoffair' with letters rearranged gives 'feofbria'.
'feofbria' going within 'lin' is 'LIFE OF BRIAN'.

Can you help me to learn more?