The Isley Brothers ( EYEZ-lee) are an American musical group originally from Cincinnati, Ohio, that began as a vocal trio consisting of the brothers O'Kelly Isley Jr., Rudolph Isley and Ronald Isley in the 1950s. With a career spanning over seven decades, the group has enjoyed one of the "longest, most influential, and most diverse careers in the pantheon of popular music". Together with a fourth brother, Vernon, the group performed gospel music until Vernon's death a few years after its formation.
https://en.wikipedia.org/wiki/The_Isley_Brothers