Aliases
An alias is an alternate name for an entity. They typically contain common misspellings or variations of the name and are also used to improve search results.
Das Land des Lächelns: Akt II. Nr. 10 Duett „Als Gott die Welt erschuf” – „Meine Liebe, deine Liebe, die sind beide gleich” (Gustl, Mi) has no aliases.