Question: What is the cause of death of composer of song None But The Lonely Heart (Tchaikovsky)?
Sentence (from "None but the Lonely Heart (Tchaikovsky)"): Pyotr Ilyich Tchaikovsky composed a set of six romances for voice and piano, Op. 6, in late 1869; the last of these songs is the melancholy "None but the Lonely HeartNet, tol'ko tot, kto znal"), a setting of Lev Mei's poem "The Harpist's Song," which in turn was translated from Goethe's "Wilhelm Meister's Apprenticeship".
Relevant evidence: Yes