The Reed: Both the oboe and cor anglaise are played with a double reed made out of very thin cane. The two pieces are bound together so as to leave a small gap of air for the player to blow through
The Body: The conically shaped body of the oboe is constructed out of wood (grenadilla, rose or cocus), enlarging to a bell at the lower end.
The cor anglaise is distinctly different as it has a greater length, a curved tube carrying the reed and a pear shaped bell. Unlike the flute, these instruments have more than one system of keys and the preferred choice varies due to personal taste or nationality of the player.