Doobie Brothers drummer Michael Hossack. (Richard McLaren/AP/D. Baron Media Relations)

Hossack, who served in the Navy during the Vietnam War, joined the band in 1971 and left in 1973, according to the Associated Press. He reunited with the group in 1987 after he was asked to play in benefit concerts for Vietnam veterans.

In a statement, Bruce Cohn, the Doobie Brothers’ manager, called Hossack “a one-of-a-kind guy.”

“I speak for Mike’s family and the entire band when I say he will be greatly missed,” Cohn said.

Tom Johnston, one of the founding members of the band, said in a statement, “Mike has always been a part of my musical life and the life of the Doobie Brothers; from our earliest singles, like ‘China Grove’ and ‘Blackwater’ to our most recent single ‘Brighter Day.’ ”

“He was an incredible musician, a studio quality drummer. The last few years, he was brave and determined to keep on playing in the face of ill health, and I will always admire him for that,” the vocalist and guitarist said.

Patrick Simmons, an original member of the Doobie Brothers who still plays with the band, remembered Hossack’s big heart in a statement.

“We were friends for 43 years and we shared some wonderful adventures together, times I will never forget,” Simmons said. “Thanks for all those wonderful memories Mike, and all the great music. We love you.”