Coronavirus (COVID-19) regulations guidance (updated by the NI Executive on 2nd July 2021).
Outdoor and indoor visitor attractions are permitted to open (theatres and concert halls are not included) and are subject to the requirements on gatherings to determine the maximum numbers permitted access.
From 5 July live music will be permitted at outdoor events, without restriction to volume. Live music will also be permitted in licensed and unlicensed premises. Music must be at ambient levels that permit normal conversation and with suitable mitigations in place.
See full details at the link below.