Dyffryn Nantlle Male Voice Choirwith choirmaster Mr C H Leonard (teacher at Penygroes County School).
It's possible that this photo was taken during a recording for a BBC radio programme at Neuadd y Penrhyn, Bangor.
Thomas Emlyn Jones (soloist with the choir) is in the front row, wearing a light suit.
Charles Owen (Libreral Club, Caernarfon) far right in the front row.