Ardent crooner carrying vase (7)
I believe the answer is:
burning
'ardent' is the definition.
(I've seen this in another clue)
'crooner carrying vase' is the wordplay.
'crooner' becomes 'Bing' (Bing Crosby).
'carrying' is an insertion indicator.
'vase' becomes 'urn' (both can mean a container).
'bing' placed around 'urn' is 'BURNING'.
(Other definitions for burning that I've seen before include "Of urgent interest; flaming" , "Passionate" .)