The Colorado Symphony Orchestra will go on with its "Classically Cannabis" concert series changing the bring-your-own marijuana events to invitation-only fundraisers so they will not be construed as public events that could potentially break the law.

The CSO stopped selling tickets to the high-profile series Monday in response to a letter from the City of Denver warning that the events could run afoul of regulations forbidding marijuana consumption "openly and publicly in a manner that endangers others."

Instead, concerts will now be open only to "a closed list of VIP guests" managed by the concert's promoter Edible Events, according to a carefully worded statement from the CSO.

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