The pear-shaped bell of the cor anglais gives it a more covered timbre than the oboe, closer in tonal quality to the oboe d'amore. Whereas the oboe is the soprano instrument of the oboe family, the cor anglais is generally regarded as the tenor member of the family, and the oboe d'amore—pitched between the two in the key of A—as the alto member.[4] The cor anglais is perceived to have a more mellow and plaintive tone than the oboe. Its appearance differs from the oboe in that the reed is attached to a slightly bent metal tube called the bocal, or crook, and the bell has a bulbous shape. It is also much longer.