"Believe" singer (4)
I believe the answer is:
cher
'believe singer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cher that I've seen before include "US singer; dear (Fr.)" , "1987 Best Actress Oscar winner for "Moonstruck"" , "Moonstruck star" , "Sonny and - -" , "US singer/actress - French river/department" .)