serialist

A practitioner or adherent of serialism, an approach to composing which emphasizes the use of a series of notes, especially scales, to achieve coherence.

A serial offender; usually a serial killer, but may also include a serial rapist or serial arsonist depending on the context.

A writer or creator of serials; someone who creates a work that is published in installments.

Of, pertaining to, or employing serialism.