Reginald Smith Brindle - Serial Composition (1966)

Great book. Before the standardization of Babbitt's row matrix, so not necessarily the best first introduction to serialism, but it goes over not only the basic concepts of serialism/twelve-tone (or "twelve-note," since he was European) but application of serialism and atonal styles to various forms, orchestration, discussion of Klangfarbenmelodie, etc.

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