The End of the Road singers began as a quartet in the 1980s but became a trio in 2003 when MCCary, who suffers from scoliosis, or a curved spine, left the group due to chronic back problems.

The remaining bandmates Wanya Morris, Nathan Morris and Shawn Stockman reflected on his departure in an upcoming episode of U.S TV show Oprah: Where Are They Now? and Wanya suggests MCCary could have treated his problems but he just stopped showing up.

"One of the problems was he had a back issue," he said in the promo. "It could have been fixed, instead he stopped coming to work and we had to move forward without him – and he wasn't really happy about that. We actually parted ways."

In the clip, airing in the U.S. on Saturday night (10Sep16), he also praised their former bandmate for his "ridiculous" voice, saying, "He was a phenomenon.... There was no voice like it."

The trio marked the anniversary of their debut record 1991's Cooleyhighharmony by recording old and new tracks for a retrospective album called Twenty in 2011. They previously revealed they had asked MCCary to take part but he declined.