IPA: /ˈbændˌliːdə/
KK: /ˈbændˌlidər/
A person who leads or conducts a musical group, especially one that plays for dancing or entertainment.
The bandleader skillfully directed the musicians during the performance.
Bandleader → It is formed from "band" (from Old English *banda*, meaning a group or a company) and "leader" (from Old English *lædere*, meaning one who leads). The word "bandleader" refers to a person who leads a group of musicians or a band.
Think of a 'group' ('band') of musicians being guided by someone who 'leads' them — that's what a bandleader does.