[1] In 1889 he entered the Royal Academy in London to study music with Alexander Mackenzie and Frederick Corder, but after two terms his father withdrew funding.
[2] Wallace was greatly influenced by Franz Liszt, and was an early (though not the first) composer of symphonic poems in Britain.
He was one of the composers featured in Granville Bantock's concert of new music by himself and his friends, put on at Queen's Hall on 15 December 1896, for which Wallace wrote a "manifesto".
[3] (Other composers included in this group were Erskine Allon, Arthur Hinton, Stanley Hawley and Reginald Steggall).
He would frequently use the Hebrew letter shin in his artwork, due to its resemblance to a W. During the First World War, he served as inspector of ophthalmic units in Eastern Command, at the rank of captain.