Last week the Denver city attorney’s office hand-delivered a letter warning the Colorado Symphony Orchestra (CSO) to cancel a series of upcoming pot-themed fundraising concerts dubbed “Classically Cannabis: The High Note Series.” 

Officials believe that the events – sponsored by legal pot businesses – are being publicized as BYOC (”bring your own cannabis”) and encouraging concert attendees to indulge in recreational weed to enhance their musical experience.   

The first of three planned CSO performances at Denver’s Space Gallery, which will include a separate outdoor patio for pot smoking, is scheduled for May 23.

However, as public consumption of cannabis remains illegal, the city will not issue the necessary permits to hold the events. Despite the fact the art gallery is a private location, state law could interpret the space as public

The letter states that police could halt the concerts and prosecute all participating business owners and event organizers should the CSO disregard the city’s warning. So apparently the city is serious: there will be no buds for Bach, no marijuana for Mozart.

In a statement, the CSO declared it “takes the issue raised by the city of Denver very seriously … We’re reviewing the issues with our legal team.”

University of Denver law professor Sam Kamin told the Denver Post that if pot use at the Space Gallery is confined to a patio, that would appear to most people to be more private than public, and if CSO went to court, they could have a legitimate case against the city.