This is an annual Geiko stage performance held at the Ishikawa Prefectual Concert Hall. What makes this event special is that Geiko from the three districts perform together along with musicians (Geigi). There are 2 shows at 1:00 and 4:00. I am quite sure your only chance to see so many Geiko at one time. A truly unique experience which tourists rarely know about. Tickets go on sale mid-June. To see pictures of past performances and purchase tickets (Y 7700-9900):

https://hk-event.jp/event/list.php