arranger

Concise Oxford English Dictionary © 2008 Oxford University Press:
arrange/əˈreɪnʤ/

▶verb

• 1 put in a neat, attractive, or required order.

• 2 organize or plan.

  ■ reach agreement about an action or event in advance: they arranged to meet at eleven o'clock.

• 3 Music adapt (a composition) for performance with instruments or voices other than those originally specified.

• 4 archaic settle (a dispute or claim).

– derivatives
arrangeable adjective,
arranger noun.

– origin ME: from OFr. arangier, from a- (from L. ad ‘to, at’) + rangier (see range).