Hello!
(I hope I am right in this board with my question!)
I have a question about the keys on clarinets. In the opera "Hansel and Gretel" by Engelbert Humperdinck there is a passage in which clarinets in Bb are used. I made a screenshot of it.
In the first two bars the key is G major, and the clarinet in Bb is correctly notated in A major. But in the third bar there is a key change to C major, but the clarinets are now also notated in C major! Shouldn't they be written in D major?
I have found a similar example in another opera. The key is E flat major, but the clarinets in A are notated in C major. What does that mean? How should I read these notes?
(I hope I am right in this board with my question!)
I have a question about the keys on clarinets. In the opera "Hansel and Gretel" by Engelbert Humperdinck there is a passage in which clarinets in Bb are used. I made a screenshot of it.

In the first two bars the key is G major, and the clarinet in Bb is correctly notated in A major. But in the third bar there is a key change to C major, but the clarinets are now also notated in C major! Shouldn't they be written in D major?
I have found a similar example in another opera. The key is E flat major, but the clarinets in A are notated in C major. What does that mean? How should I read these notes?