Bloch wrote all but the first of his string quartets in the last years of his life, inspired to tackle the medium by hearing a performance of his first quartet by the Griller Quartet. The Grillers recorded all but the final quartet in wonderful idiomatic readings.My introduction to the last quartet came from the Fine Arts Quartet, an ensemble which even now is under-rated. Their reading captures the idiom perfectly.
The quartet, written when Bloch was terminally ill, has a language that is gentle and searching at once. The composer's daughter, Suzanne, tells of how he wrestled with the end, writing four or five versions, each perfectly good, before he arrived at the one that made sense to him. It is a magical moment as the music loses pace, the instruments begin to separate into distinct voices, the cello hovers on D flat - the last note before the open C string, and then the chord simply opens into C major, calm, firm and final.
This is a 160 kbs needledrop, but from a decent copy of the LP, and the performance is utterly special. If you like this, head over to Music & Arts and get hold of their wonderful Bartók quartets.