schoenberg-pierrot lunaire (expressionism)
bartok-concerto for orchestra, or music for strings percussion and celesta (folklore with modernism)
alban berg- violin concerto (12 tone, but not strict like webern)
boulez-structures (not my favorite, but essential for strict serialism)
ligeti-lux aeterna, atmospheres (micropolyphony)
alfred schnittke-symphony 1 (postmodernism)
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