Claim: Backbone Flute (originally called Verses for Her) was written and completed in the autumn of 1915.
Evidence: The poem was completed in November, originally called Verses for Her (Стихи ей, Stikhi ei). Backbone Flute was written in the autumn of 1915, soon after Mayakovsky, now unwilling to fight in the War, accepted his new friend Maxim Gorky's help and joined the Petrograd military automobile driving school.