Rudolph Isley, an Original and Enduring Isley Brother, Dies at 84He provided harmony vocals and the occasional lead. He also helped write some of the group's biggest hits, including "Shout," "Fight the Power" and "That Lady."
Source: Rudolph Isley, an Original and Enduring Isley Brother, Dies at 84 (https://www.nytimes.com/2023/10/12/arts/music/rudolph-isley-dead.html)