In an attempt to offer hope, light and beauty in a difficult time, Medford composer and conductor Oliver Caplan presents another of his weekly Wednesday night live-streamed solo performances featuring members of his contemporary chamber music group, Juventas New Music Ensemble. Performing this week will be viola player Lu Yu. Yu holds degrees from the Royal Academy of Music in London and the New England Conservatory in Boston. She is the founding violist of the Loki String Quartet, which is in residence at Worcester Polytechnic Institute, and also is principal violist of the Boston Civic Symphony and performs with the Boston Philharmonic Orchestra.

Visit the Juventas ensemble’s Facebook page promptly at 8 p.m. to enjoy the performance, which is free and open to all. The series continues every Wednesday night through May 27.