User can sing like an angel

Pros:
-user doesn't need to warm up
-user can heal others with their voice
-user can hypnotise others with their voice
-user can empower others

Cons:
-user can only sing, not talk
-user can change volume
-user may give someone too much power
-user can sing when weaker
-user can sing in human languages, only an unknown one

Weakness: starvation
User's voice will fade and lose what powers there is when hungry