polystylismn.
/ˌpɒlᵻˈstʌɪlɪz(ə)m/, U.S. /ˌpɑliˈstaɪˌlɪz(ə)m/ Chiefly Music.
The adoption of a number of different styles, sometimes within the same piece of work; an instance of this.
ΚΠ
1973 Jrnl. Aesthetics & Art Crit. 31 495/1 As an exception to the generalization that the film makes no attempt to find equivalents for Joyce's polystylism, the technique is unimpressive.
1989 Tempo No. 168. 4/2 More recent works have proved ‘polystylism’ to be an efficient generator..of alienation.
1990 Strad June 450/1 The parallel polystylisms of such figures as Berio, Henze or Maxwell Davies.
2002 N.Y. Times (Nexis) 4 Aug. ii. 29/1 It's hard not to be startled by the exuberant polystylism of Luciana Souza.
This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1973