Term referring to a German song of any era, but most commonly to those of the Romantic era. The lied (plural = Lieder) has been in existence since the 15th century and has undergone many changes of form. The Lieder of the Romantic era are characterized by their expressive emotion and the prominent piano accompaniment.See also art, generally applied to the distinctive German vocal style which originated in the late 18th-and early 19th-century