The Cramer Quartet’s season opener, “Springtime in September,” focuses on Haydn’s development and influence on Mozart as a quartet composer. The program features Haydn’s “Sun” Quartet Op. 20 No. 2 as well as Mozart’s “Spring” Quartet K. 387, the first of the “Haydn” Quartets which were dedicated to the elder composer. Written in the span of only ten years, these quartets showcase the radical evolution of the string quartet genre in the late 18th Century.