dodecaphonist

Etymology
International word formed circa 1950 from +  +, recorded in English since 1953, presumably modeled on 🇨🇬.

Noun

 * 1)  A practitioner or proponent of dodecaphony, i.e. use of the dodecaphonic musical scale, which has twelve tones per octave
 * The pioneering Austrian composer Arnold Schönberg was the leading dodecaphonist.

Translations

 * Dutch: dodecafonist, dodecaphonist
 * French:
 * German: Dodekaphonist