WGBH has hosted many string quartets in its performance studio. Hear three of the best, playing music by Joseph Haydn. Two hundred years ago — May 31, 1809, to be exact — Joseph Haydn died at age 76.

The Music: Haydn’s six Op.20 String Quartets were written in the productive year 1772 and called the ‘Sun’ after the publisher Hummel’s trademark. Beethoven modelled his Op.18 set on them and Brahms ...