PERSON@1 , ORGANIZATION@1 's brother , had been a founding member of the ensemble playing the cello , but left after one season to get married and was replaced by PERSON@2 , who was in turn replaced by PERSON@3 ; cellist PERSON@4 joined in NUMBER@1 , but later on PERSON@5 rejoined .

PERSON@1 , ORGANIZATION@1 's brother , was the cellist at first , but left after one season he left to get married and was replaced by PERSON@2 .
