Singer's first disc rising to second place — official! (7)
I believe the answer is:
coroner
'official' is the definition.
(I know that coroner is a type of official)
'singer's first disc rising to second place' is the wordplay.
I cannot really see how this works, but
'first' could be 'one' (I've seen this in another clue) and 'one' is present in the answer.
'disc' could be 'o' (disc-shaped letter) and 'o' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for coroner that I've seen before include "He presides over an inquest (7)" , "Inquest holder" , "Official holding inquests" , "Investigator" , "He sits on cases" .)