His verse drama The Dance of Death (1933) was a political extravaganza in the style of a theatrical revue, which Auden later called "a nihilistic leg-pull." His next play The Dog Beneath the Skin (1935), written in collaboration with Isherwood, was similarly a quasi-Marxist updating of Gilbert and Sullivan in which the general idea of social transformation was more prominent than any specific political action or structure. The Ascent of F6 (1937), another play written with Isherwood, was partly an anti-imperialist satire, partly (in the character of the self-destroying climber Michael Ransom) an examination of Auden's own motives in taking on a public role as a political poet. This play included the first version of "Funeral Blues" ("Stop all the clocks"), written as a satiric eulogy for a politician; Auden later rewrote the poem as a "Cabaret Song" about lost love (written to be sung by the soprano Hedli Anderson, for whom he wrote many lyrics in the 1930s). In 1935, he worked briefly on documentary films with the GPO Film Unit, writing his famous verse commentary for Night Mail and lyrics for other films that were among his attempts in the 1930s to create a widely accessible, socially conscious art. 1936–1939 In 1936, Auden's publisher chose the title Look, Stranger! for a collection of political odes, love poems, comic songs, meditative lyrics, and a variety of intellectually intense but emotionally accessible verse; Auden hated the title and retitled the collection for the 1937 US edition On This Island. Among the poems included in the book are "Hearing of harvests", "Out on the lawn I lie in bed", "O what is that sound", "Look, stranger, on this island now" (later revised versions change "on" to "at"), and "Our hunting fathers". Auden was now arguing that an artist should be a kind of journalist, and he put this view into practice in Letters from Iceland (1937) a travel book in prose and verse written with Louis MacNeice, which included his long social, literary, and autobiographical commentary "Letter to Lord Byron". In 1937, after observing the Spanish Civil War he wrote a politically engaged pamphlet poem Spain (1937); he later discarded it from his collected works. Journey to a War (1939) a travel book in prose and verse, was written with Isherwood after their visit to the Sino-Japanese War. Auden's last collaboration with Isherwood was their third play, On the Frontier, an