The Marshall Tucker Band brought Swanlund on board in the mid-1980s after it had split and then reunited. He was the longest-running member of the band except for founding member Doug Gray.
Gray writes on the band's official website, "[Stuart] recently took a hiatus from the road due to health problems and even with those issues, Stuart's enthusiasm onstage never wavered. Our thoughts and prayers are with Stuart's family and those who knew him. We have lost a great friend."
Swanlund's funeral will be Saturday, Aug. 11 in South Carolina, where Swanlund grew up -- he was a neighbor to Gray, who he would go on to play with years later.