Ellen Cohn; Jazz Recording Industry Executive

Ellen Cohn, 35, an executive in the jazz recording industry. A native of St. Louis, Ms. Cohn had served as vice president of the Chase Music Group record label and general manager of MAMA, which packaged collections of traditional jazz music. She helped to record and publicize such artists as band leader Bob Florence, pianist Terry Trotter and singer Mark Winkler. An influential spokeswoman for jazz, Ms. Cohn campaigned vigorously, if futilely, in 1990 to keep radio station KKGO-FM exclusively a jazz station. She regularly celebrated her birthday by organizing jazz performances as benefits for her favorite charities. On Sunday in Van Nuys of cancer.