It’s Holy Week, so expect Bach’s sacred oratorios to be in bloom. But for me, give me the intimacy of the cello suites and violin sonatas. Fortuitously, Bach’s works for solo strings will be presented in their entirety in the contemplative setting of Princeton University Chapel, performed by students from the university’s music department. If you’re in the area, stop by or go the distance. The Bach marathon will take place tomorrow (Tuesday) from 3:00 to 8:30 p.m. Admission is free, so Bach ‘til you drop.