Music that always plays on the radio and the TV, and is on the top 40 list on every music software like iTunes and Spotify. It is quick-made on a computer, usually featuring not very good but good looking musicians (if they can be called that) and it is un-original and boring. People without any taste in music listen to it because it's easy to find and everyone else listen to it, so then they don't need to worry about being considered "different". Mainstream music songs usually stay on the top-lists for a couple of months or maybe a year, and then they're gone. Also, people who listen to it usually would call a 2 year old song "very old", though bands like Led Zeppelin still rock anyone's brains out with their songs from the seventees.
Annoying teen girl: "Oh my god, have you heard that new Rihanna song? I love it!"

A month later, someone puts on the same mainstream music song

Same annoying chick: "Eww that song is old and outdated, turn it off"
by rocknroller2012 November 27, 2012
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Commercialized music that is extremely popular among people. Depending on the generation, mainstream music may be great or it may be garbage. As of the 2000's, mainstream has been garbage. Even more recently, Pop and generic rock music has overtaken Rap music, and the mainstream is at it's apex of garbage.

Mainstream music is contantly shat out by Hollywood, and what is considered piping hot now will be forgotten in a few years. For example, all of the boy-bands popular in the late 1990's to early 2000's are nowhere to be seen.

You can find many shat-out artists such as Lady Gaga plastered all over the Myspace home page.
Mainstream music is mainstream when Hollywood says it is.
by stay gold ponyboy April 16, 2010
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Music that's usually on the radio, Top 40 and is well known to the general public. Usually criticized by fans of the previous mainstream generations, and people who prefer bands and/or genres that aren't apart of the mainstream popularity of the time.
Todays Mainstream Music usually includes Bands/Artits such as 50 cent, Rhianna, Fall Out Boy, My Chemical Romance, etc.
by 1729 December 17, 2008
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Noise that should not be referred to as music
Jessica: Eh mah gawd Lizzie, the bestest genre is totally mainstream music, cause it is so effing awesome.
Lizzie: Eh mah gawd, me too! Lady Gaga's new CD is effing awesome.
by Old Soul July 1, 2009
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music that is over-played and shouldnt be referred to as music, but ear piercing shit made by computers in a studio for a popular singer to buy and put shitty lyrics such as "babyy babyy babyy oh!!" or "take a dirty picture of me" over the top to make it sound even "better". then to be fed to the world on a radio station for every one to get sick of, then another loser makes a "better" song and thus the cycle starts again.
bill- "hey joe, do you for any chance listen to mainstream music?"

joe- "hell no you fucking whore, i hate that overplayed bullshit, its like someones shitting in my ears"
by mrwigglebreath September 2, 2010
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The worst music out there. It is usually for people that have low IQ's, are conformist, and are afraid to explore other music out there.

It is always on the radio, Top 40, MTV, and everywhere you go! All of it is crappy music created for people with no idea what good music is.
Teenybopper Girl 1: Hey, that new Jonas Brothers song is awesome! Have you heard it?
Rock or Metal Fan 2: No, your music is crappy gay mainstream music pretending to be rock. It is rubbish music made for idiots with no music taste.
by masterpassion October 4, 2009
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commercilized conformist music that is made to not offend anybody. It is listened to in the masses and often is unoriginal. People who don't have a clue about real music like mainstream because it is easy to listen to and it means they don't have to think and can save the effort of their braincells to think about what they should have for tea or who will be evicted from big brother.
guy: that joe mcelderry song 'the climb' is such an example of mainstream music.
girl: i know, that is why rage against the machine's 'killing in the name of' got the christmas number one.
by individualcharacter December 30, 2010
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