The most common and most likely answer to this crossword clue is the 8 letter word FALSETTO
I've seen this crossword clue in The Sunday Telegraph
F
A
L
S
E
T
T
O
More clues leading to the result FALSETTO
- Unusual male singing voice framed in female singing voice
- Unusually pitched battle beside Cornish river
- Fixed in fine voice, abnormally high one
- High in pitch, female voice entertains group
- Boy in loud quarrel raised voice
- Singer in argument after footballers left
- Not one to lose argument, raised voice
- Voice disagreement after brief collapse
- Wrong two times, love – rather strained
- Nothing live on TV till The Voice
Buddy explains!

The straight part
We know that "Voice" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case voice = falsetto.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 FALSETTO mean?
FALSETTO noun- The "false" (singing) voice in any human, usually airy and lacking a purity of vowels; created by utilizing the next highest vocal folds above those used for speech and normal range singing. It is commonly confused with the Head Voice register.
- A person who sings in falsetto.
- To sing or utter in falsetto.