Classic provider of reel oil (7)
I believe the answer is:
lorelei
'classic provider' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'of reel oil' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'reel'+'oil'='reeloil'
'reeloil' anagrammed gives 'LORELEI'.
Can you help me to learn more?
(Other definitions for lorelei that I've seen before include "alluring female" , "Fatal attraction" , "Rhine rock of siren legend" , "voice to die for" , "Rhine Rock where siren lived" .)