Propers of the Church Year, set to proper tones

See what you think about this item produced by the Gregorian Institute for Guam. It is a short and convenient book of propers for the old form (62 Missal) for those parishes with few resources, perhaps only a cantor. What makes it nice is that each chant is set to its Graduale Psalm tone, which makes it unlike, e.g. Rossini, who maintains one tone for the whole Mass. Thus do these more closely approximate the sound of the actual Graduale chants.

A special thanks to Daniel Bradley for making this available. It strikes me that this could be a good resource in the first months or year after an extraordinary form Mass has begun in a parish and the musicians are still struggling with full propers.