The works recorded here have all been edited afresh according to the isosyllabic principle.In the conducti this means that each syllable is assigned the value of a dotted crotchet in what is often felt as a measure.Two notes over a syllable have been interpreted as a trochaic rhythm(i.e.a crotchet followed by a quaver),and three notes as three quavers.Divisions of the unitary value into more than three notes may be heard in Mundus vergens 1.In recent years the evidence has been mounting that this isosyllabic,trochaic manner of performing the texted sections of polyphonic conducti was widespread in the twelfth century(and indeed long after in England),being eventually replaced by the modal system of rhythmic values in the early thirteenth century. The monophonic conductus Anglia,planctus itera demands a different treatment,for its expansive melismas are too luxurious for an isosyllabic approach.It is performed here in what might be described as...