Singer using broadcast primarily to contact one million heavenly beings (8)
I believe the answer is:
cherubim
'heavenly beings' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.
'singer using broadcast primarily to contact one million' is the wordplay.
I cannot really understand how this works, but
'singer' could be 'cher' (American singer) and 'cher' is located in the answer.
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
'million' could be 'm' (abbreviation) and 'm' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for cherubim that I've seen before include "Angel" , "Angels, usually portrayed as winged children" , "Angelic beings grouped with seraphim" , "Angelic beings found with seraphim" , "Angelic Children, often winged" .)