“The Brahms Third Piano Quartet offers plenty of interpretive temptations. A young Brahms began the piece during Robert Schumann’s last illness, when Brahms was torn between despair for his friend and love for his friend’s wife,” (LAPhil.com). “He then tabled the project for nearly two decades before picking it up again and making thorough revisions (including lowering the key a half step), resulting in the current work. An older Brahms confessed to his publisher in characteristically sarcastic terms, ‘On the cover you must have a picture, namely a head with a pistol to it. Now you can form some conception of the music! I’ll send you my photograph for the purpose. Since you seem to like color printing, you can use blue coat, yellow breeches, and top-boots.'”
“It was a tongue in cheek reference to Goethe’s 1774 epistolary novel, The Sorrows of Young Werther, in which the Romantic hero commits suicide after falling in love with a married woman whose husband he admires,” (The Listeners’ Club). “Piano Quartet No. 3 in C minor was the last to be published of Brahms’ contributions to the genre. Yet, its first version, which preceded the other two quartets, was completed in 1856 at a time when the 23-year-old composer had become devoted to Clara Schumann. While Robert Schumann spent his final years languishing in an asylum amid deteriorating mental health, Brahms assisted Clara in taking care of the Schumann household. Obvious parallels can be drawn between Brahms’ deep affection for Clara and the emotional tumult of the fictional Werther.”
Beginning in C minor and touching briefly on several other keys, the piece clearly shifts to the relative Eb major at 2:13, starting with a piano solo section which is joined by the string trio at 2:27. Many other shifts in tonality follow.