For 10 points, name this genre of chamber music played by a cello, a viola, and two violins.
Luigi Nono included many lines of poetry by Friedrich Holderlin in one of these pieces entitled Fragmente-Stille, an Diotima. Schoenberg set Stefan George's poem "I feel a breeze from another planet" as the text to his second of these pieces, whose movements progress from tonality to atonality. Felix Mendelssohn composed his sixth in F minor in response to the death of his sister Fanny, while Shostakovich considered his eighth, in C minor, to be his suicide note, although it is dedicated to the "victims of fascism and war." (*) Haydn's Opus 20 consists of six of them that give each instrument its own voice, laying the groundwork for later ones, such as the three ones in Beethoven's Opus 59 commissioned by Andreas Razumovsky. For 10 points, name this genre of chamber music played by a cello, a viola, and two violins.
Luigi Nono included many lines of poetry by Friedrich Holderlin in one of these pieces entitled Fragmente-Stille, an Diotima.
string {quartets}