Osgood combines 19 verses of the 13-century Latin hymn into 10 movements of varied length and contrast. There is an overall arch shape, and material from movement 2 is found in movement 9 and from the opening movement in the final one.

The performers are excellent. Jack Liebeck contributes a violin solo to ‘O quam tristis’ (‘O how sad’), which indeed it is in a ravishingly beautiful way.

This is one of the movements featuring Grace Davidson, who is outstanding among the three vocal soloists. The composer himself plays piano, adding to a richly scored, string orchestra texture. Rupert Gough ensures that the performance overall is restrained and powerfully moving.