Tonight is Walpurgis Night (AKA Saint Walpurgis Night or Eve) which is celebrated on the night of 30 April and the day of 1 May.
It is the eve of the Christian feast day of Saint Walpurga, an 8th-century abbess in Francia, and commemorates her traditional canonization date and the movement of her relics to Eichstätt on 1 May in the year 870.
But the origins of the Christian holiday date back to earlier pagan celebrations of fertility rites and the coming of spring. After the Norse were Christianized, the pagan celebration became combined with the legend of St. Walburga which was a common way to transition pagans to Christianity. It is likely that the shared date allowed people to celebrate both events under church law without fear of reprisal.
Saint Walpurga was believed to have cured the illnesses of many local residents and battled pests, rabies, and whooping cough, as well as witchcraft. In Germanic folklore, Hexennacht (Dutch: heksennacht), literally “Witches’ Night”, was believed to be the night of a witches’ meeting on the Brocken, the highest peak in the Harz Mountains, a range of wooded hills in central Germany.
Christians prayed to Saint Walpurga for her intercession to protect them from witchcraft. Bonfires on the Eve are meant to ward off evil spirits and witches.
Local variants of Walpurgis Night are observed throughout Europe in the Netherlands, Germany, the Czech Republic, Slovenia, Sweden, Lithuania, Latvia, Finland, and Estonia. In Denmark, the tradition of using bonfires to ward off the witches is observed as Saint John’s Eve.
Your soundtrack for tonight should be Procol Harum’s “Repent Walpurgis” from their first album in 1967 – the same album that gave is “A Whiter Shade of Pale.”