1. Terminology
The word “song” – denoting (a) the act of sustaining a melody with the voice, and (b) a composition for singing – dates back to Old English and has virtually identical cognates in all the Germanic languages (e.g. ON söngr, Dutch zang, OHG sang). NHG Gesang, however, was superseded in the sense of “composition for voice” by Lied in the 15th century. According to Grimm’s Deutsches Wörterbuch, Lied (compare ON ljóð, OE…