 <translate> The relevant information is: Orchestras are usually led by a conductor who directs the performance with movements of the hands and arms, often made easier for the musicians to see by use of a conductor's baton. So the answer is a conductor. <yor> Ohun tó yẹ kó o mọ̀ ni pé: Olórí ẹgbẹ́ akọrin ló sábà máa ń darí àwọn olórin tó bá ń fi ọwọ́ àti apá darí ohun tí wọ́n ń kọ, ó sì sábà máa ń lo ọ̀pá ìdarí láti mú kó rọrùn fún àwọn olórin láti rí ohun tí wọ́n ń kọ. Nítorí náà ìdáhùn náà ni olùdarí. 