I am focused on a myriad of things at the moment, and so I will open this to the readership to obtain sound and documented answers to this priest’s questions about the Extraordinary Form.
Note that there are two issues.
First, it is permitted. Next, is it a good idea? While the first can be resolved with relative ease, the second will involve some thought and discussion. Of course the circumstances of the individual parish of the priest questioner cannot be considered, because I have anonymized this. Still, some discussion could be helpful.
Is it tolerable to have hymns at Low Mass (namely, at offertory and after Holy Communion).
If singing is tolerated at Low Mass, why not encourage the singing of some of the antiphons in Psalm tones?