The DaPonte String Quartet is offering a six-part series of free online concerts; the first three are now available, the fourth, featuring Mozart’s String Quartet in C Major, will premiere on Saturday, April 24, at The performance was filmed at the Rockport Opera House earlier this year.

Mozart’s quartet in four movements, nicknamed “Dissonance,” was composed in 1785 and dedicated to Franz Josef Haydn.

Additional performances will be offered on the website, with Stravinsky’s Three Pieces for String Quartet on May 15, and Ravel’s String Quartet in F Major on June 5.

For more information, and to join the DaPonte email list, email or phone Lisa Westkaemper at 315-7105.