What makes a song mainstream or not?

Something that was mainstream 10 years ago isn't mainstream today.

For instance, if you play a Britney Spears song from her Baby One More Time album, people are going to give you stares and some may even say you are living in the past.

Mainstream music is a song that is currently popular in the moment. Its pretty much decided by white people...there is a reason the negative rap music is successful but not the rap that is supposed to have real messages...because white people can't remotely relate to real rap let alone want to hear music about problems their race may have caused to the black race.

I am not a rap fan, nor hip hop fan. I do not like either version, the negative version whites like or the supposedly more positive version for black people to like.

I usually never start liking a popular song in the moment until that singer usually has already dropped another album. When the hype is over and it becomes old news then I am likely to listen and like the song.

I have no favorite genre of music at all. I like almost any decade of music, any genre, as long as the music is catchy. I rarely listen to the lyrics of a song.

I do think its true that movies and music can help tell you how immoral society is getting. How exactly?

Watch one of the beach movies of the mid 1960s. Then watch a teen movie such as American Pie. What becomes acceptable only matches society in movies. The reason schools and such are thinking music isn't important is because of the trash and the singer's trashy image these days....if thats music, then whats the point in it right? Music and movies go hand in hand with a society's lack of morals.