The piece written on the occasion of Milenium Chrztu Polski (1000th anniversary of Poland’s christening). It is a virtuoso piece in the form of chorale variations on the subject of the oldest Polish song Bogurodzica Dziewica. The piece presents a number of virtuoso and interpretation challenges. A wide range of colour effects makes it sound best on grand concerto organ. The piece was published in 1974 by Agencja Autorska together with Toccata for solo organ (1971).