I would like to know which instruments of a modern orchestra are not able to play a full chromatic run?
I know that the harp for example is in a certain key and you have to use the pedals to change the key you're in. So a fast run wouldn't be possible, because you can't change the pedals that quickly.
The modern Timpani is as far as I know also already able to play a chromatic scale, but how fast can you actually change the pitch with the pedal?
Are there any other instruments which requires certain actions to play outside of a specific scale, or are there even instruments which aren't able to play a chromatic scale?