KOSI 101.1 will change to an all-Christmas format for a 24th year. The public can attend a live event to watch the button get pressed for the big switch.

Denver radio station KOSI 101.1 has announced the date and time of its annual switch to nonstop Christmas music. This is the 24th year that KOSI 101.1 FM will change to an all-Christmas music format.

DENVER (KDVR) — The Christmas season may feel like it starts sooner and sooner each year, but it’s time to get ready: Colorado radio station KOSI 101.1’s switch to 24/7 Christmas music is just over ...

Denver radio station KOSI 101.1 flipped the switch to 24/7 Christmas music at a live event at Cherry Creek North on Thursday ...