Perdendosi is a collaborative work with Edmund de Waal, a study of leaves with a deeply moving and personal response in Edmund's accompanying text 'Twelve leaves'.

When we think of leaves, we might think of the fresh green unfurling in spring or the crimson and gold of autumn. But it is leaves which show the least trace of that transformational cycle that interest me most – when they have lost any colour and become more like parchment than plant. This is a held, drawn out stage in their metamorphosis, poised on the cusp of decay and their eventual disintegration. They are all gradually dying away, which gives this piece its title from the musical term: perdendosi.