Live backing group appearing in later audition — an historic time (3)
I believe the answer is:
era
'an historic time' is the definition.
(I've seen this in another clue)
'live backing group appearing in later audition' is the wordplay.
'ERA' is hidden within the letters.
However, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for era that I've seen before include "8" , "Important historical period" , "Period, age" , "A particular period of time" , "Distinct period in history" .)