Bella's String Quartet in B Flat Major is the composer's last major quartet work. It was most probably written in Hermannstadt (now Sibiu) in 1887. The work is a demonstration of the composer's mature composition style, its scoring drawing on a balanced contrapuntal movement of all the voices. The work's architecture inclines to the stabilised archetype of the classical period, and its equilibrium speaks rather of a lyrical essence than of the drama which marked Bella's previous string quartets. The features of a Romanticism tinged by the Classical are here beginning to prevail in Bella's chamber output. In this respect, then, in his Sibiu quartet the composer aligned himself with a tendency whose protagonists were Vienna's Johannes Brahms and Prague's Antonín Dvořák.