Although there is little (to no) historical evidence associating Morris Dancing with historic pagan celebrations, for centuries Morris sides throughout England have gathered at dawn to dance in May. Morris dance sides are now a common feature of pagan festivals in the UK. I used to enjoy watching Wolf’s Head and Vixen when I lived in London. So in order to help you dance in May I present their 1 May 2009, 5.30am performance.
P.S. You may be interested in this article “Goths and pagans are reinventing morris dancing.”