Paschal Triduum
In the Ordinary Form of the Roman Rite of the Catholic Church, Easter is one of two solemnities with an octave, the other being Christmas. The days of the octave are given the second-highest rank in the calendar (second only to the Paschal Triduum and Easter itself), ranking even above normal solemnities. The paschal sequence "Victimae paschali laudes" may be sung before the Gospel reading on each of these days.