Notker Balbulus, also known as Notker of St Gall or Notker the Stammerer, was a renowned Benedictine monk at the Abbey of St Gall in Switzerland who made substantial contributions to both the music and literature of his time. These include the Liber ymnorum, which forms an important collection of early musical sequences that celebrate special moments in the liturgical calendar. As the 'very long melodies' of the liturgical sequences were a formidable challenge to memorise, Notker created these texts as an aid to holding the melodies within the mind and memory. They are performed here by the acclaimed and insightful Schola Antiqua of Chicago.