Fumana mabitso a ikhethang a bangoli ba lipina ka har'a mongolo. Li arole ka khoele le lekhalo.
Context:Ho isa bohōleng bo itseng, litloaelo tsa Europe le tsa United States li ile tsa arohana ka mor'a Ntoa ea II ea Lefatše. Har'a baqapi ba nang le tšusumetso e khōlō Europe e ne e le Pierre Boulez, Luigi Nono le Karlheinz Stockhausen. Ea pele le ea ho qetela ka bobeli e ne e le liithuti tsa Olivier Messiaen. Filosofi ea bohlokoa ea bokhabane hammoho le sehlopha sa mekhoa ea ho qapa ka nako ena e ne e le serialism (eo hape e bitsoang "through-ordered music", "'total' music" kapa "total tone ordering"), e neng e nka e le qalo ea eona litlhaku tsa Arnold Schoenberg le Anton Webern (empa e ne e le khahlanong le'mino oa setso oa melumo e leshome le metso e' meli), hape e ne e amana haufi le mohopolo oa Le Corbusier oa modulator. Leha ho le joalo, baqapi ba bang ba neng ba e-na le mekhoa e metle joaloka Dmitri Shostakovich le Benjamin Britten ba ile ba boloka mokhoa oa ho qaptjoa ha molumo ho sa tsotellehe mokhatlo o hlaheletseng oa serialist.  Amerika, baqapi ba kang Milton Babbitt, John Cage, Elliott Carter, Henry Cowell, Philip Glass, Steve Reich, George Rochberg, le Roger Sessions, ba ile ba theha likhopolo tsa bona. Ba bang ba bangoli bana (Cage, Cowell, Glass, Reich) ba ne ba emela mokhoa o mocha oa ho etsa liteko tsa'mino, o ileng oa qala ho belaella likhopolo tsa motheo tsa'mino tse kang ho ngola mantsoe, ho bapala, nako le ho pheta-pheta, ha ba bang (Babbitt, Rochberg, Sessions) ba ile ba iketsetsa li-extensions tsa bona tsa li-serial tse leshome le metso e'meli tsa Schoenberg.
Pierre Boulez, Luigi Nono, Karlheinz Stockhausen, Olivier Messiaen, Arnold Schoenberg, Anton Webern, Le Corbusier, Dmitri Shostakovich, Benjamin Britten, Milton Babbitt, John Cage, Elliott Carter, Henry Cowell, Philip Glass, Steve Reich, George Rochberg, Roger Sessions