A long-running holiday jazz concert scheduled for Christmas Eve at the John F. Kennedy Center for the Performing Arts was officially canceled this year following a decision by its longtime host to step away from the event. The concert, part of an annual Jazz Jam series that has taken place for more than two decades, was expected to continue a tradition that has drawn audiences to the venue each holiday season. However, the organizer cited personal concerns related to recent changes at the performing arts center as the reason for the cancellation. The Kennedy Center’s website now lists the Christmas Eve performance as canceled, and no replacement event has been announced.