Classical music in Arizona is primarily served by KBAQ out of Phoenix, KNAU out of Flagstaff and KUAT out of Tucson.
Both KBAQ and KNAU broadcast the Pheonix Symphony’s radio series. Information about the upcoming schedule is available from the Phoenix Symphony.
KUAT out of Tucson does not appear to broadcast any local concert programming, but it does carry several syndicated concert programs, including the Chicago Symphony, New York Philharmonic, Pittsburgh Symphony, and the Chamber Music Society of Lincoln Center. Upcoming schedule information for KUAT can be found on their website.