Exhausted organist door hanger

Exhausted Organist - enter at your peril. A warning to anyone wanting to disturb an organist! After major festivals in the church year, organists around the world collapse in a heap after playing marathon hours on hard benches in cold (or hot, if you are in the other hemisphere) halls, cathedrals and churches. With luck they make it home to their beds, and this is the time to hang one of these door hangers, and leave the poor musicians in peace. The words have some spotted metal pipes in the background.