Balladeer (7)
I believe the answer is:
crooner
'balladeer' is the definition.
(synonyms)
This is all the clue.
(Other definitions for crooner that I've seen before include "Singer like Bing and Frank" , "Sentimental balladeer" , "Singer of quiet songs" , "Bing Crosby, for example" , "Crosby or Sinatra?" .)