<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo I-quartet iqanjwe ngesihloko sesigatshana sesibili, uSchubert asithatha engomeni ayibhala ngo-1817 enesihloko esifanayo.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi I-quartet iqanjwe ngesihloko sesigatshana sesibili, uSchubert asithatha engomeni ayibhala ngo-1817 enesihloko esifanayo; kodwa isihloko sokufa siyabonakala kuzo zonke izigaba ezine ze-quartet. 