Chichester-born cellist Ben Rogerson is joined by colleagues from the BBC Concert Orchestra, under the auspices of the Minerva Ensemble, to perform Schubert’s enigmatic Quartett-Satz and Beethoven’s brooding string quartet in C Minor Opus 18 No. 4. Juan Gonzalez and Cormac Brown, violins, and Mike Briggs, viola, Ben Rogerson, cello. . . .