
1) Alternative to alternative 2) Common 3) Criminal Barker wading 4) English rock music group 5) Hardly revolutionary 6) Like many issues 7) Nonalternative 8) Not on the fringe 9) Not the fringes 10) Part of MSM 11) Popular 12) Prevailing cultural trend 13) Prevailing influence 14) Principal trend 15) Sociological terminology
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https://www.crosswordclues.com/clue/mainstream

1) Conventional 2) Pop
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https://www.crosswordclues.com/clue/mainstream

Mainstream is the common current thought of the majority. It includes all popular culture and media culture, typically disseminated by mass media. The opposite of the mainstream are subcultures, countercultures and cult followings. It is often used as a pejorative term by subcultures who view ostensibly mainstream culture as not only exclusive but...
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http://en.wikipedia.org/wiki/Mainstream
[fanzine] Mainstream was a science fiction fanzine edited by Jerry Kaufman and Suzanne Tompkins. It was nominated for the 1991 Hugo Award for Best Fanzine, losing to Lan`s Lantern. ...
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http://en.wikipedia.org/wiki/Mainstream_(fanzine)
[Adjective] The most normal and conventional group of ideas or people.
Example: The Top 40 generally contains mainstream music.
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http://www.bbc.co.uk/skillswise/glossary/

A term applied to activities, ideas, products/services, etc., that are used/followed/supported by most people. Mainstream basically means 'commonly used by people'. Mainstream as a marketing term is the opposite to 'niche' or specialised. Interestingly while 'mainstream' seems like a relatively modern word, it's actually existed in this sense since...
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http://www.encyclo.co.uk/local/22643

That part of the airflow around a body which is far enough away to remain undisturbed by the body's passage. Thus the mainstream velocity is equal and opposite to the body's velocity
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http://www.encyclo.co.uk/visitor-contributions.php

'Mainstream' is a term that refers to the ordinary classroom that almost all children attend. Accommodations may be made for children with disabilities or who are English language learners, as part of the general educational program.
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http://www.ldonline.org/glossary

[
n] - the prevailing current of thought
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http://www.webdictionary.co.uk/definition.php?query=mainstream

The style of Jazz regarded by the average player as today's norm, as opposed to fusion, rock, avant-garde, etc.; sometimes the term implies a somewhat conservative, relatively diatonic vocabulary exemplified by Oscar Peterson. Mainstream Jazz is in a highly evolved state, having incorporated virtually the entire harmonic language of 20th century to...
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https://www.apassion4jazz.net/glossary5.html
noun the prevailing current of thought; `his thinking was in the American mainstream`
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https://www.encyclo.co.uk/local/20974

normal and preferred by most people - Most people like mainstream hip hop more than alternative hip hop.
Found on
https://www.englishclub.com/vocabulary/music-vocabulary.htm
No exact match found.