 KMBR was born on December 13, 1996, when it switched over from its old call letters (KQUY) and branding (Y-95).Y-95 played a Hot AC format featuring artists like Mariah Carey, Madonna, Huey Lewis and Richard Marx.KMBR shifted the emphasis to "Montana's Best Rock", featuring core artists such as Led Zeppelin, Van Halen, AC/DC, Lynyrd Skynyrd and more.