Yost died Sunday at Fort Hamilton Hospital in Hamilton, about 30 miles northwest ofCincinnati. He died of respiratory failure at 2:25 a.m., said hospital spokeswoman MarielouVierling.
The Classics IV's hits included Spooky, Stormy and Traces of Love.
Yost had been in nursing homes since suffering a brain injury sustained in a 2005fall.
"I'm still in shock because he was fine Saturday morning," said his wife Linda Yostof suburban Hamilton. "And by, you know, early Sunday morning he was gone."
The Classics IV got their start in Jacksonville, Fla., where Yost, a native ofDetroit, was raised, Glickman said. Their hit recordings were produced in Atlanta under thesupervision of producer Buddy Buie and Bill Lowery, founder of Lowery Music Inc.
The group performed together for about five years.
Linda Yost said a memorial service is scheduled for 3 p.m. Sunday at Mueller ParkerFuneral Home in Mason, following a visitation from 1 p.m. to 3 p.m. Slide shows and video from 1965to the present will be displayed.
The event is open to the public, and Linda Yost encourages fans to share storiesand laughter at the event.