The most common and most likely answer to this crossword clue is the 5 letter word ADELE
A
D
E
L
E
More clues leading to the result ADELE
- A key English woman
- Woman, a deputy blocking entrance
- Singer in a wooded hollow heard
- Comrade Lenin provides cover for artist
- Some serenade leading singer
- Part of sad elegy for English singer
- Sign that character must be removed by alpha female
- Singer of serenade, Lennon
- Woman in a strike at publisher’s
- Singer back in style led appeal
Buddy explains!

The straight part
We know that "Singer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case singer = adele.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.