Mass 1 (Missa Lux et Origo) St. Antoine Daniel Kyriale has pdfs and recordings. Credo 1 (as above) Propers: proper introit - see St. René Goupil Gregorian Chant. Unfortunately they don’t have mp3s for Pentecost, but you can find some from Sao Paolo, Brazil. choir to join in Alleluias and the second half of the verse and from sicut erat. Alleluia - using Richard Rice’s arrangement from Simplified Graduale, Major Propers Sequence - Veni Sancte Spiritus - Rene Goupil has two videos for this one Offertory - simplified version from ccwatershed. Communion - Videos and pdf at Rene Goupil above.