gradus, of the ambo.
The responsorial Psalm is usually either sung or read by a lector.
From the Lectionary for Mass, no. Following the practice of the Jewish synagogue, the community traditionally replies to a scriptural reading by singing a psalm or biblical canticle.

During the Liturgy of the Word, there are two readings and a psalm sandwiched in-between and the Gospel. How To Introduce Responsorial Psalm Singing Source: The Complete Library of Christian Worship, Robert E. Webber, General Editor The following article elaborates on a form of responsorial psalmody described in the preceding articles, describing how the Psalms can be sung responsorialy and how this practice can be introduced to a congregation not familiar with this practice. How To Introduce Responsorial Psalm Singing • Step 2 provides an opportunity for the congregation to sing a familiar hymn refrain. – Order of Christian Funerals, General Introduction, nos. the responsorial psalm. Before the Responsorial Psalm, there is a period of silence that is placed right before we hear the psalm. Since the psalms are songs, whenever possible, they should be sung. It's a factored-in pause so that we can The psalms are designated for use in many places in the funeral rites (for example, as responses to the readings, for the processions, for use at the vigil for the deceased). In Rome a sub-deacon or cantor mounted the ambo and chanted the text, which came to be called the gradual, a name taken from the steps, i.e. 1013 • Step 3 makes use of a refrain sung by the congregation other than a familiar hymn phrase. 25-26.