The feast of the Purification or Candlemas as it is called in Britain and Ireland falls on February 2nd. Videte miraculum is the Responsory at First Vespers of the Purification Tallis' setting is based upon plainchant and consists of the full choir alternatim with solo or solo group – the solo portions being unorament chant and the choral sections of the chant set in a six-voice polyphonic texture. This type of Responsory is what's called a 'choral respond' and this one is particularly beautiful. It's sung below by the choir of Westminster Abbey conducted by James O'Donnell. Enjoy :-).