Note my addition [,] because the GIRM(US) seems to imply, wrongly, that there is official music and verses. GIRM 87 shows the same options for the Communion.GIRM 48. - ... In the Dioceses of the United States of America there
are four options for the Entrance Chant: (1) the antiphon from the Missal[,] or the antiphon with its Psalm from the Graduale Romanum as set to music there or in another setting; (2) the antiphon and Psalm of the Graduale Simplex for the liturgical time; (3) a chant from another collection of Psalms and antiphons, approved by the Conference of Bishops or the Diocesan Bishop, including Psalms arranged in responsorial or metrical forms; (4) another liturgical chant that is suited to the sacred action, the day, or the time of year, similarly approved by the Conference of Bishops or the Diocesan Bishop.
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