Although most of Percy Pitt's compositions seem to have been performed during his lifetime, not everything was published; and not every published work received an opus number. Many of his works were published by Augener, who also published Bridge, Delius and Ireland. A partial list of Pitt's published compositions (both with and without opus numbers) appears in (34 volumes, published between 1904-1910). Some works appear to have been given an opus number after the volume was published some time before 1910. However, gaps still apparently remain in the sequence of opus numbers, e.g. Op. 2, 7, 12, 13 etc. Nevertheless, the opus numbers seem to have been chronologically assigned in approximate composition order.