"I would have liked to have been on the road more, but the record company wanted us in the studio. Man, we were recording almost a hit a day for a while there," Dunn said.
In the 1970s, the group's members drifted apart. Jackson was killed in Memphis in 1975 by an intruder in his home.
Cropper and Dunn reunited when they joined Aykroyd and Belushi's Blues Brothers band and appeared in the 1980 "Blues Brothers" movie.
"How could anybody not want to work with John and Dan? I was really kind of hesitant to do that show, but my wife talked me into it," Dunn said in a 2007 interview with Vintage Guitar magazine, "and other than Booker's band, that's the most fun band I've ever been in."
Dunn also did session work on recordings by Clapton, Young, Dylan, Rod Stewart, Stevie Nicks and Tom Petty, according to his discography.
Dunn once said that he and Cropper were "like married people."
"I can look at him and know what he'll order for dinner," he said. "When we play music together we both know where we're going."
Dunn received a lifetime achievement Grammy in 2007.
He is survived by his wife, June; a son, Jeff; and a grandchild, Michael, said Michael Leahy, Dunn's agent.
Nekesa Mumbi Moody is the AP's music writer. Follow her at http://www.twitter.com/nekesamumbi