Steely Dan co-founder, Walter Becker's death was due to a short battle with an "extremely aggressive form of esophageal cancer," his wife has said.
He died unexpectedly two months ago and before that had to miss Steely Dan's Classic East and West concerts due to an unspecified ailment.
When he missed the concerts his bandmate Donald Fagen said Becker was "recovering from a procedure and hopefully he'll be fine very soon."
Sadly Becker was actually in the midst of "an intense regimen of chemotherapy," Delia Becker wrote in a letter published by Rolling Stone. His ailment, she added, "seemed to have come out of nowhere and had spread with terrifying speed."
Walter chose an intense regimen of chemotherapy at Sloan Kettering," Delia said, but "between the cancer’s aggressiveness and the overwhelming toxicity resulting from the chemotherapy treatments, Walter died less than four months after the cancer was detected."
"Understandably, Walter wanted privacy during the course of his illness and he hoped for recovery," she said. "He wanted to be able to return to the stage and once again perform for his fans. It's important to me, as it was to Walter, that you all know he never intended to keep anyone in the dark about his condition. He just ran out of time much sooner than any of us thought possible."
Steely Dan will continue without Becker and have added new concert dates.