A reader asks:
Does the fact that the chant tones will be provided indicate that we will be expected to use them, or will they just kind of be "there"?
Well, I am not an expert, but I think the general feeling is that they should be used regularly, and that they will provide a good basis for increased solemnity, but much of it will depend on the facility of the preist with chant. (My point: even the most tone deaf man can learn to carry one note, if not just two simple notes.)
Increased Solemnity would be that the 'higher' the feast, the more musical notation and chant should be included. Therefore, Easter Sunday Mass could be sung, in its entirety, start to finish. And because Easter is our highest feast day, there should be a marked increase to singing on that day, with a joyful noise unto the Lord. Lent should be sung, but in more minor tones to reflect the tenor of the season, etc.
However, let's say it is Wednesday, July 28, and there is nothing, nothing, on the calendar. While the Mass parts should be chanted, and the '4 Hymn Sandwich' and/or introits and antiphons should be chanted, to chant the Eucharistic Prayer just because I can, well, that doesn't necessarily reflect 'increased solemnity.'
Then again, I work in the Vocation Office, not the Worship Office. I know Fr. Geoff Drew lurks here every once in a while, he might offer a clarification or comment....