Holy thursday is the 1st day of easter trifduum
The easter triduum contains 3 major days events that will happen
The 1st day 2nd day and the last day only have one mass because it tells the story of jesus starting at the last supper until easter sunday
Holy thursday in the morning there are chrism mass in any local cathedral
After the chrism mass there will be and mass for the lords supper and washing of the feet
These songs that can be sung commonly when offertory during holy thursday the song is ubi caritas
After of all starting of the mass there are sign of the cross in gloria there are bells but the bells will be silent after a day
The exposition of the altar of repose commonly song here is the pange liqua gloriosi