[11] He died in London of cancer in December 1965, a victim of a lifetime's heavy smoking and the severe gassing he suffered in the trenches.
[1] Michael Tippett described him as "a Percy Grainger-ish person...very anti-classicist, feeling that the music we were all writing was fundamentally based on German folk-song and we should try to get away from that".
[2] Tippett identified the polyrhythms and Northumbrian elements in his own Concerto for Double String Orchestra as coming from the influence of Mark.
[2] His own works include orchestral strathspeys, a piano concerto, the North Country Suite for orchestra (performed at the RCM in 1927),[12] the Scottish Suite for four violins and piano (published in 1927 as part of the Carnegie Collection of British Music), some choral music and the ballad opera Mossgiel, after Robert Burns.
[13] Mark based the final movement of his Scottish Suite on a close study of the Piobaireachd, which he described as "the old music of the Great Highland Bagpipe".
[17] He also wrote on economics, including two books: The Modern Idolatry (1934) and The Analysis of Usury (1935),[18] in which he formulated a system of free money, arguing that savings should be penalised and rents abolished.