On the same day the "Hal an Tow", another celebration of the coming of spring, is performed upon the streets of the town. This is a morning ritual that is traditionally more boisterous than the dance. It is a moving street theatre that appears to have its origins in the Middle Ages, and the themes tend to be more English than uniquely Cornish. The theatre consists of the Hal-an-tow song accompanied by dancing and acting out the content of the verses. The costumes and the song itself represent many different historical and mythical themes. It has evolved over time, the most recent verse (about St Piran) only appeared within the 21st century.