O Sacrum Convivium - Bass line

I sing the bass line in my octave the second time through.
Composer: Roberto Remondi
Arranged by Nicola A Montani
Text: St Thomas Aquinas
O sacrum convivium, in quo Christus sumitur; recolitur memoria passionis ejus; mens impletur gratia; et futurae gloriae nobis pignus datur. Alleluia.
Translation:
O sacred banquet, wherein Christ is received; the memorial of his passion is renewed; the soul is filled with grace; and a pledge of future glory is given to us. Alleluia.