This is an interesting combination. Russian icons of the Mother of God are paired with a Spanish male chorus singing a hymn to the Mother of God of one of the Hermandades (male lay brotherhoods). There is still a great deal of practise in the Roman church left over from pre-schism times. There is no identity between Catholic and Orthodox, but, we share common roots in the first millennium, which makes them the closest of any of the Western confessions.