For centuries, this Gregorian Chant was used to escort the body out of the Funeral Mass:
Deducant te Angeli:
In tuo adventu suscipiant te Martyres,
Et perducant te in civitatem sanctam Jerusalem.
Chorus Angelorum te suscipiat,
Et cum Lazaro quondam paupere
Aeternam habeas requiem.
This is the translation:
May the angels lead you into Paradise,
May the Martyrs come to welcome you
February 13, 2014