The most common and most likely answer to this crossword clue is the 7 letter word SOPRANO
I've seen this crossword clue in The Times
S
O
P
R
A
N
O
More clues leading to the result SOPRANO
- Bribe artist, and no singer
- Singer in small musical work hurried over
- Very quiet artist, with little number, becoming singer
- Voice of gangster?
- Singer thus embracing musical work took off
- First half of song softly managed by old singer
- Singer, very good, keeping musical work organised
- 15 on 5 scored highly
- Second number limits disheartened opera singer
- Carmela, perhaps, as a noted female
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 = soprano.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.
What does SOPRANO mean?
SOPRANO noun- Musical part or section higher in pitch than alto and other sections.
- Person or instrument that performs the soprano part.
- To sing or utter with high pitch, like a soprano singer