It seems that most people on the internet nowadays don't really have high regards for the current generation of singers, particularly pop stars, compared to the iconic legends (Freddie Mercury, Aretha Franklin, etc.) of the past but I think there's plenty of incredibly talented vocalists popular right now.
So like the title says, who do you think are among the best singers and worst singers of the current roster, mainstream or lesser known? And who do you think is overrated/underrated?