A voice raised in a loyal toast (4)
I believe the answer is:
alto
'a voice' is the definition.
(alto is a kind of voice)
'in a loyal toast' is the wordplay.
'in' says the answer is hidden in the clue.
'ALTO' is hidden in the letters of 'loyal toast'.
'raised' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for alto that I've seen before include "Singing range" , "someone to sing" , "The highest adult male singing voice" , "Highest male voice: lowest female voice" , "Key old > male who scores high" .)