Franz Joseph Haydn is widely known as the “father of the string quartet,” but some works originally attributed to Haydn were in fact written by someone else. La Speranza performs one such work, a string quartet by Benedictine monk and devoted Haydn admirer, Roman Hoffstetter. Audiences can compare and contrast Hoffstetter’s work with one of Haydn’s own, a charming quartet in G major nicknamed “How do you do?” Spanish composer Juan Cristosomo de Arriaga’s amiable Variations for String Quartet belies traditional string quartet form and complements Haydn and Hoffstetter’s familiar voices.