Another important influence on the quartet is Zdeněk Fibich's monumental piano cycle Nálady, dojmy a upominky (Moods, Impressions and Reminiscences).
This ambitious work of 376 pieces chronicles the romance between Fibich and his beloved muse Anezka Schulzová.
Janáček, in a letter quoted by Josephson, compared his relationship with Stösslová to Fibich's, and vowed to embody her in the music of his quartet.
[1] It consists of four movements: The viola assumes a prominent role throughout the composition, as this instrument is intended to personify Kamila.
Milan Škampa of the Smetana Quartet has interpreted the third "letter", or movement, as a lullaby for the son that Janáček and Kamila Stösslová never had together.