I find that music, rhythm, song and dance seem to stir the spirits, both in our bodies and those outside. I believe the ancients knew this as well. Drums, flutes and other forms of musical and rhythmic instruments were always a part of ritual and spirits. The shaman use this in many of their rituals which include calling their ancestors. So did and do the African tribes. I am closest to the veil when certain music is being played. It is my connection to those who have passed before me!