Although Pärt incorporates significantly more space within his works than Bach, repeated listening reveals layers of similarity between the two compositional styles…Both rely on taut melodies, an economy of expression and a highly tonal approach.

The sheer clarity of Williams’ Bach – two absolutely equal hands, voices chasing each other playfully – lends qualities of purity and truthfulness to her readings. The consoling nature of the Pärt pieces hangs hauntingly in the air, the temporal distance between the two composers subsidiary to their shared fundamentals. Williams has the ability to mesmerise in Pärt, creating stillness, even timelessness. Caught in a fine recording, this is a magnificently stimulating concept, brilliantly realised.