Egy Grencsó CD-nek pont ez a címe:
Grencsó Open Collective: Marginal Music (Rétegzene)
https://www.jazzma.hu/lemezpolc/hazai-eloadok/grencso-open-c...

Ha feltételezem, hogy a társadalom egy bizonyos szűk rétege által kedvelt, hallgatott, játszott zenéről van szó, akkor a marginal music lesz a jó szerintem. Marginal, mert a perifériára van szorulva a fő áramlat (mainstream) mellett.
Például:
Electronica, Dance and Club Music
edited by MarkJ. Butler

"While Hebdige is able to find a sense of politicisation of the ethnic identity in looking at 'marginal music' of black Caribbean cultures (1987), it is no longer clear where the 'centre' of rock is (Frith 1988; Grossberg 1988)."
Itt található:
https://books.google.com/books?id=OkQrDwAAQBAJ&pg=PA185&lpg=...

Music Papers: Articles and Talks, 1961-1994
By John Beckwith

"Take any marginal music - that of Australia, of Argentina, of Canada: what it's marginal to in the 90s isn't Mozart or Beethoven but "world music".
...
But consider: the comprehensiveness of the "world music" concept is itself an illusion: it excludes music that in a continuing tradition all over the world does address a serious and attentive listenership - and it excludes music of marginal cultures."
A könyv itt olvasható:
https://books.google.com/books?id=Jw5yVtb9qBsC&pg=PA125&lpg=...

MUSIC AND MIGRATION
Edited by Maria de Sao Jose Corte-Real
"The actual interest tends to emphasize the "music of the periphery", marginal by definition, emerging in same cases, in various cities and peripheries of the globe...
...
It seems relevant to reflect upon the power of resistance of marginal music; a power that lies essentially in the fact of music being stigmatized. This resistance translates in the creation of parallel cultural worlds invented at the margins, at the periphery."
Itt található:
https://books.google.com/books?id=woJ5DwAAQBAJ&pg=PT76&lpg=P...