This motet from Heinrich Isaac's Choralis Constaninis is desinged to be sung in tandum with the plainchant on which it is based. However, this can also be sung as a Communion motet for any feast day.
1962 (EF) IX Sunday after Pentecost
2011 (Novus Ordo) Corpus Christi (AB) or 15th, 20th, and 21st Sundays.
Qui Manducat ~Isaac | SATB a cappella | 3-6'
Jn. 6:57, Ps. Ps. 118: 1-2,
He that eateth my flesh, and drinketh my blood, abideth in me, and I in him, says the Lord.
1. Blessed are the undefiled in the way, who walk in the law of the Lord.
2. Blessed are they that search his testimonies: that seek him with their whole heart.
Gloria...