Antiphonary (type of manuscript containing chants for the Old Hispanic cathedral ordo, i.e. vespers, matutinum and mass, plus tertia, sexta and nona on penitential days) for the entire liturgical year. Different hands added in f. 1r an office of litanies, a hymn for Saint Michael, the monogram of king Fernando I of León, and a credo. F. 1v has a miniature and rubrics with a dedication of the manuscript from Totmundo to the abbot Ikilanus, as well as a chant. It has a computational chart at f. 2r, followed by a series of 11th century prologues (ff. 2v-3r). In f. 3v it has an 'Adnuntiationes festivitatum' (probably from the 10th century), including chants. F. 4r has a postcommunion. An alfa features p. 4v, where we can also see the monograms of Alfonso, Sancho and García, the sons of King Fernado I and Queen Sancha. Notated chants for Saint James are included in f. 5r, and an Oviedo cross (in f. 5v). F. 6r has an illustration mentioning 'Ikilani'. Following this there is a Hispanic calendar (ff. 6v-9r) and computational tables and charts (ff. 10-19v), and a treatise discussing them (ff. 20r-27v). A sanctus is included in f. 28r and a full-page illustration in p. 28v specifying that it is a 'LIBER ANTIPHONARIUM DE TOTO ANNI CIRCULO'.

Date: second half of the tenth century. Other dates: 900-905 (De Luca, 2016); first third of the tenth century (Gros, 1978); first half of the century (Díaz y Díaz, 2007); tenth century (Pinell, 1978 and 1965; Randel, 1973; Vives, 1955; Rojo y Prado, 1929); eleventh century (Sunyol, 1925; García Villada, 1923; Clark, 1920; Férotin, 1912; Riaño, 1887).

Possible provenances: East of León (Díaz y Díaz, 2007); area around León (Gros, 1978; Deswarte, 2013); Beja/ S. Cipriano de las Riberas del Porma (Zapke, 2007); based on a southern model (Gil, 2013; Millares Carlo et al., 1999; Pérez de Urbel, 1968 and 1954; Anglés, 1938; Wagner, 1928).

Liturgical tradition: A

Randel responsorial tone tradition: León.