"A Nation's Voice", a piece commissioned for the 1916 centenary celebrations, will be premiered live on RTE that day.
Here is the RTE report that went out on the evening news...
1,100 singers rehearse for Easter concertMore than 1,100 singers from all over the country will take part in 'A Nation's Voice' - a free open air choral and orchestral performance on Easter Sunday
Posted by RTÉ News on Saturday, January 23, 2016
And thanks to PRO Nora Kennedy, here are a few pictures from the day: