One singer in three? (5)
'one singer' is the definition.
(I know that treble is a type of singer)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for treble that I've seen before include "Three times as many" , "Consisting of three parts; voice" , "What boys sing" , "a very large one" , "High voice; tripartite" .)
This clue might be a double definition.
'one singer' is the first definition.
(I know that tenor is a type of singer)
'three?' is the second definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I don't see?
'in' is the link.
Can you help me to learn more?
(Other definitions for tenor that I've seen before include "Caruso or Domingo" , "Meaning - male singing voice" , "Pitch range" , "Drift of thought" , "Vocal range" .)