The antiphons in the Roman Missal and Graduale Romanum are the texts given by the Church herself for each particular liturgy. You can also find these texts handy through monthly or yearly missals such as Living With Christ.
During this time of pandemic, the singing of the Mass is now permitted by one cantor, under strict conditions. Cantor may sing for the assembly the propers of the Mass: Introit (entrance antiphon), Offertory antiphon and Communion antiphon. Antiphon psalm verses are optional. Please refer to: Liturgical Guideline Update (Sep. 25) - re: liturgical singing
If you are not sure about singing the antiphons and would like to learn more about it - watch this course from Dr. Jenny Donelson (Seminary of New York/Dunwoodie) on How to add Antiphons to your Parish Sunday Mass.
The resources to sing the Mass antiphons are plenty, so please use one that would work best for your congregation and cantors skill.
Online and free resources to sing the antiphons in English
Can we use psalm tones to sing the antiphons?
Yes. Any liturgical texts can be sung with psalm tones.
To sing the Antiphons in Latin, use: Gregorian Missal, Graduale Simplex or Graduale Romanum
Catholic Pastoral Centre Staff and Guest Writers