Psalm tone

In chant, a reciting tone (also called a recitation tone) is a repeated musical pitch around which the other pitches of the chant gravitate, or by extension, the entire melodic formula that centers on one or two such pitches. In Gregorian chant, reciting tones are used for a number of contexts, including the chanting of psalm tones. Each mode has its own associated psalm tone, whose primary pitch is variously called the dominant, tenor, or tuba.

"Reciting tone" can refer to the repeated pitch in isolation or to the entire melodic formula for which that pitch is a structural note.

Reciting tones occur in several parts of the Roman Rite. These include the accentus prayers and lessons chanted by the deacons or priests such as the Collect, Epistle, Gospel, Secret, Preface, Canon, and Postcommunion, as well as such regular texts as the Pater noster, Te Deum, and the Gloria in excelsis Deo. They are also sung in versicles and responds such as the Dominus vobiscum ("The Lord be with you") of the officiant followed by the Et cum spiritu tuo ("and with your spirit") of the choir. Some tones, presumably from the earliest layers of chant, such as the Collect, Pater noster, and Postcommunion for Easter, consist of just two notes, often a reciting tone on A or G, with inflected notes one pitch below on G or F. Other tones, from later in the medieval period, usually recited on a C or F, inflecting down to the two notes below, such as the Epistle for Easter.

More complex patterns were used for the psalm tones, used for chanting the Psalms and related canticles in the daily Offices. There are eight psalm tones, one for each musical mode, designed so that the antiphon that is sung between psalm verses transitions smoothly into the psalm tone. Each psalm tone has a formulaic intonation, mediant (or mediation), and termination (or ending). The intonation defines the notes for the first two or three syllables, with subsequent words sung on the reciting tone. Because of the parallel structure typical of the Psalms, psalm verses divide into two roughly equal parts; the end of the first part is indicated by the mediant, a slight bending of notes above and below the reciting tone. For longer phrases, the first part is itself divided into two parts, with the division indicated by the flexa, on which the accented syllable is sung on the reciting tone that preceded it, and the following unaccented syllable is sung a whole tone or a minor third lower (depending on the psalm tone), before returning to the reciting tone until the mediant. After the mediant, the second part of the psalm verse is sung on the reciting tone until the last few words, which are sung to a cadential formula called the termination. Several of the psalm tones have two or three possible terminations, to allow for a smoother return to the following repeat of the antiphon.

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