He was absent at both of the band’s performances during July’s Classic West and Classic East concerts due to an unspecified illness.
Steely Dan guitarist and co-founder Walter Becker died Sunday at the age of 67.
News of Becker’s death was announced on his official website. Further details of his passing were not revealed.
Becker was absent at both of Steely Dan’s performances during July’s Classic West and Classic East concerts due to an unspecified illness. In August, Donald Fagen told Billboardthat his bandmate was “recovering from a procedure” but didn’t elaborate.
After becoming musical collaborators as students at New York’s Bard College, Becker and Fagen went on to turn out numerous hit songs during the 1970s, including “Rikki Don’t Lose that Number,” “Deacon Blues,” “Kid Charlemagne,” “Hey Nineteen” and “My Old School.”
This article originally appeared on Billboard.com.