Most band music (especially in the very early stages of learning) is written in concert Bb, which is the horn's key of F. However, key signatures ranging from 1 or 2 sharps to 3 or 4 flats are what comes up most often.
There are three valves on a French horn, excluding the thumb valve, which of course makes four valves.
keys
Two
It's a double reed instrument.
The cor anglais (English horn) is a double-reed woodwind.
The English horn requires a specialized double reed similar to the Oboe
keys
Two
It's a double reed instrument.
The English horn is 2 feet 7.5 inches
The English Horn is generally considered a mezzo soprano
The English horn is also known as the Cor Anglais
The cor anglais (English horn) is a double-reed woodwind.
No it is not the same as a French or English horn.
English horn
forrests
The English horn requires a specialized double reed similar to the Oboe
The English Horn is a variant of the Oboe. It has a double reed and is pitched five notes lower then the oboe (F).