Contemporary Catholic liturgical music makes heavy use of "responsorial" settings in which the congregation sings only a short refrain (like "Glory to God in the highest") between verses entrusted to the cantor or choir. This differs from the "responsive" antiphony of Gregorian chant, in which alternate verses are divided between two bodies. The responsorial form is eminently practical in performing the psalmody of the Easter Vigil which occurs in darkness, as well as in the absence of pew hymnals or video projectors. It has the disadvantage of excluding the congregation from full participation, and some contemporary composers have preferred to through-compose their Mass settings: A much-anthologized "Gloria" is that from Carroll T. Andrews' "A New Mass for Congregations".