This funeral song was in CWB II so I looked at it briefly here.
The text is In paradisum translated by James Quinn, based on the funeral liturgy and it is set to SONG 1 by Orlando Gibbons.
I made another fake organ backing on BIAB.
May flights of angels lead you on your way
To paradise, and heavens eternal day;
May martyrs greet you after deaths’ dark night,
And bid you enter into Sion’s light;
May choirs of angels sing you to your rest
with once poor Laz’rus, now forever blest!