[3][4] JAZZ.FM91 is a registered charity[5][6] that provides youth programs, workshops, internships and scholarships in partnership with educational institutions and other arts organizations.

On April 6, 1964, the licensee name was changed to the board of governors of Ryerson Polytechnical Institute (as it was then known), and CJRT-FM became a professionally staffed radio service, with the broadcast schedule increased from 7 am to midnight seven days a week.

[7] It played classical, jazz, and folk music, with educational and public affairs programming, children's shows, and comedy from the BBC.

After a large public outcry, a year later in 1974, Ontario Premier Bill Davis announced that the provincial legislature would pass legislation to create an independent corporation to run the station and buy the license.

[7] In 2004 Ross Porter, whose weeknight jazz programs on CBC Radio had made him a national name, and who later helped CanWest launch COOL-TV and Cool.FM radio, was hired to replace Chuck Camroux in July, as president and CEO Two years later, after nearly 14 years occupying Ryerson property at 150 Mutual Street, CJRT moved to its current street-front facilities at 4 Pardee Ave. in the Liberty Village neighbourhood of Toronto.

[11][12][13][14][15][16] A short time later, the station cut four hosts - Jaymz Bee, Mark Wigmore, Walter Venafro and David Basskin.

Following an Ontario Court ruling granting access to the membership contact information to the Save JAZZFM under the leadership of Brian Hemming.

[17] [18] Lorie Russell, vice president and managing director of JAZZ.FM91 announced in September 2020 that she would be leaving the station in mid-December.

Former JAZZ.FM Director of Sales and Marketing Dana Wigle returned to the station as general manager.,[19][20] [7][21] Under new management, JAZZ.FM91 won several broadcasting awards[22][23][24][25][26][27][28][29][30][31][32] and expanded its digital presence with the addition of podcasts,[33] specialty channels[34][4][35] and virtual concerts.