Hartker, blessed, †1011 St. Gallen, monk at the Benedictine monastery of St. Gallen. Around 986 he wrote the Antiphonale officii monastici, preserved to this day in the monastery library at St. Gallen (MSS 390 and 391) and known in musicological literature as the Hartker Antiphonary. The manuscript, measuring 22.2 × 16.7 cm, consists of two parts. Together with additions from the eleventh and twelfth centuries, it constitutes one of the earliest monuments notated in the so-called St. Gall neumes with supplementary letter signs. It contains, among other materials, a tonary, chants de Tempore and de Sanctis (proprium and commune), including numerous offices, histories, antiphons, and Venite chants. As one of the most important sources in the history of Gregorian chant, the Hartker Antiphonary served as a principal basis for the preparation of the so-called Vatican edition of the antiphonary, Antiphonale sacrosanctae Romanae ecclesiae pro diurnis horis SS. D.N. Pii X. Pontificis Maximi restitutum et editum Romae Typis Polyglottis Vaticanis 1912 (2nd ed. 1919) and the monastic antiphonary Antiphonale Monasticum pro diurnis horis iuxta votum RR. DD. Abb alum Congregationum confoederatum ordinis Sancti Benedicti a Solesmensibus monachis restitutum. Parisiis-Tornaci-Romae 1934.
Literature: G. Scherrer Verzeichnis der Handschriften des Stiftsbibliothek von St. Gallen, Halle 1875.
Antiphonaire de l’Office monastique transcrit par H. MSS. Saint-Gall 390–391 (980–1011), facsimile ed. J. Froger, «Paléographie Musicale» series II, vol. 1, Bern 1970
Corpus antiphonalium officii, vol. 2, ed. R.-J. Hesbert, in: Rerum ecclesiasticarum documenta, seria maior, «Fontes» VIII, Rome 1963 (text ed.)
M. Huglo Les tonaires. Inventaires, analyse, comparison, Paris 1971
