symphonizein
Symphonizein is a rare English verb derived from Greek roots meaning to bring into harmony or agreement. In its broad usage, it can refer to coordinating elements to produce a cohesive whole, whether in music, rhetoric, philosophy, or social coordination. In music, it may imply aligning voices or timbres to achieve a unified texture; more generally, it can describe the act of harmonizing divergent components, positions, or interests.
Etymology and form: the term draws on the Greek syn- “together” and phōnē “sound” or related forms
Usage notes: symphonizein and its derivatives appear chiefly in discussions of mediation, policy design, or organizational
See also: harmonize, reconcile, conciliate, concord, symphony, symphonia, symphonize.