The Arts Council of Northern Ireland has published a manual for the safe reopening of performance venues. The document has been produced based on current developing best practice, legislation and guidance by the Government, NHS, PHA and HSENI in response to the Covid-19 pandemic.
Please click the link, http://www.artscouncil-ni.org/images/uploads/publications-documents/In-the-Bubble-of-Our-Making-Reopening-the-Arts-in-Northern-Ireland-July-2020.pdf
Page 29 and 30 refers to wind instruments.