When the Vatican Council allowed the use of the vernacular language during liturgy in 1963, it seemed for a moment as if it had dealt the final blow to Gregorian chant, as Latin is of course an essential element of the genre. Many worshipers even believed that Gregorian chant had been forbidden. But actually, nothing of the kind had happened. Paragraph 36 of the Constitution on the Sacred Liturgy states that Latin must be used in Roman Catholic liturgy. Paragraph 54 only allows for the vernacular language to be used. This means the use of Latin is still obligatory. Another document produced by the Council was the Instructio Musicam Sacram, advising the bishops to maintain the practice of reading mass in Latin. But during the 60's and 70's, both Latin and Gregorian chant disappeared from everyday liturgical practice. During the 80's we notice a small revival of the music, especially during funeral services. Nowadays, a continuously growing number of choirs has Gregorian chant on its repertoire. Singers and conductors, having studied the new scientific developments, enjoy the forbidden fruit even more than before.