People have sung, probably in caves, since before there was language. So we communicated with each other, and with the cave, through song. Sometimes they were songs that have been written, sometimes it was just notes going back and forth and painting their own pictures.
So, on 9th September 2018, Alex and musician Barbara Gilbertson painted with song in Rydal Cave. Alex has made several paintings of this experience. Please see the Gallery.