This manuscript was in a file with manuscripts of other Masses that Proulx rearranged the organ accompaniment for (for manuals only or with pedal). The two accompaniments for Murray's alleluia are on the bottom half of this manuscript page (the top has an accompaniment of Vulpius' alleluia). There is a simple accompaniment for Murray's alleluia (manuals only), as well as one with the melody and pedal lines separated out. It is unclear if these accompaniments were ever published.

Alleluia Dom Gregory Murray, O.S.B., arr. R. Proulx, 1985 copy score with melody, 3 trumpets, and organ; copy score with pencilled instrumentals labelled "Last after verse", with descant, melody, 3 trumpets, organ, 2 trumpets, 2 trombones, timpani; instru