The most common and most likely answer to this crossword clue is the 7 letter word DESCANT
I've seen this crossword clue in The Daily Telegraph
D
E
S
C
A
N
T
More clues leading to the result DESCANT
- Unfortunate act ends melody
- High line from tenor accompanying exotic dances
- Soprano’s brought in to transfer top notes
- Small boy is unable to sing
- Style of singing succeeded, being brought in by pair on TV
- Melody making cast end in chaos?
- Two notes barely sufficient for singer
- Singing style let flow over listeners finally
- Sung part ‘notedly superior’?
- Variety act ends with melody
Buddy explains!

The straight part
We know that "Singing style" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case singing style = descant.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 DESCANT mean?
DESCANT noun- A lengthy discourse on a subject.
- A counterpoint melody sung or played above the theme
- To discuss at length.
- To sing or play a descant.