I have a query, that I have tested outside of PHP directly on SQL and still getting the same problem
The idea being that $currentArtist is sent through using the GET met
SELECT * FROM `".DBN."`.`events` WHERE `event_artist1` = '".$currentArtist."' OR `event_artist2` = '".$currentArtist."' OR `event_artist3` = '".$currentArtist."' ";
Hope this helps.