When you think about all instruments being in different keys it can be confusing. You have the clarinet in B-flat, saxophone in E-flat, and French horn in F: why are they pitched in different keys? It seems it would be better to just write everything in concert pitch, wouldn’t it? Believe it or not, it makes a lot more sense to have some instruments in different keys.
When you look at the family of saxophones you may realize that all the different types of saxophones are pitched differently – yet they all have roughly the same fingerings. This enables a saxophone player to move from instrument to instrument seamlessly. The saxophone is also a transposing instrument. This means that a saxophone pitched in E- flat playing a C will sound an E-flat on the piano which is in concert pitch. Many instruments are transposing instruments which do not play in concert pitch.
This is where it can become confusing because a conductor will have to transpose many parts of the score because an orchestral score is not written in concert pitch. He or she must know what key the instruments are in and be able to transpose the notes instantly to ensure they are correct.
For instrumentalists, it’s much easier. They only have to play the notes as written and everything will sound correct. However, there are some instrumentalists that do have to transpose. For example, I am also a French hornist and often there are pieces written in different keys from one another. Even though the horn is an F instrument, you will find parts that are written in D or C or E-flat or other keys, and they are forced to transpose. This happens because the horn traditionally did not have valves so the composers wrote the parts in different keys to accommodate the music. The horn player would have to add additional pipes (or crooks) to pitch the horn differently for different pieces or different movements within the same piece. These parts were written so long ago that they must be transposed today with the modern valved French horn which is pitched in F (and B-flat with a double-horn, but that’s a story for another time!)
Thanks again for joining me Robert Estrin Robert@Livingpianos.com