In O Great Mystery, movement 1, two measures before rehearsal "5", in the alto part, it's written B, C, B (Be a ta). There are no flat accidentals on the B's. Yet, it sounds like the alto is singing Bb, C, Bb. Is the Bb from the previous measure carried over? Is this an error in the score? It seems that Bb, C, Bb is what is sung. But not written. Thank you.
In O Great Mystery, movement 1, two measures before rehearsal "5", in the alto part, it's written B, C, B (Be a ta). There are no flat accidentals on the B's. Yet, it sounds like the alto is singing Bb, C, Bb. Is the Bb from the previous measure carried over? Is this an error in the score? It seems that Bb, C, Bb is what is sung. But not written. Thank you.