listener:
(plural: ‘listeners‘; pronunciation: the letter ‘i’ rhymes with the letter ‘i’ in “ink” and the letter ‘t’ is silent; for the right pronunciation, please click here)
a person who listens or is listening to others, especially to a radio programme,

a listener enjoying music
Charles is lucky in having a patient listener for a girlfriend because he’s talkative and boastful.
It is not uncommon for a speaker to have fake listeners who pretend to be listening but actually day-dreaming or making some mental calculations all along the speech.
Listeners to very loud music are warned of serious damage to their hearing faculties and, consequently, damage to the brain.
Some students in some educational institutions find the ‘listener status’ as they can first try out the subject and if the subject really interest them, they can register as regular students and learn that subject.

a good listener (L) listening to her friend
