the score bach sent to dresden consisted of the separate parts for soprano i , soprano ii , alto , tenor , bass , trumpet i , trumpet ii , trumpet iii , timpani , corno da caccia , flauto traverso i , flauto traverso ii , oboe ( d'amore ) i , oboe ( d'amore ) ii , oboe ( d'amore ) iii , violin i ( 2 copies ) , violins ii , viola , cello , bassoon and basso continuo .