The final Art Music Monday concert of the 2014-2015 season is this week, May 4, at 7:30 p.m. in the Performance Hall. The program will feature music by J. S. Bach and Louis Spohr, as well as Beethoven’s String Quartet in B-flat Major, Op. 18, No. 6. Performers include Steven Li and Andrea Tullis, violins, Dmitry Kustanovich, viola, Gayane Manasjan Fullford, cello, and Megan Li, harp. The concert is present free of charge and is under the auspices of Transfigured Nights.