An alias is an alternate name for an entity. They typically contain common mispellings or variations of the name and are also used to improve search results. View the alias documentation for more details.
The Romantic Piano Concerto, Volume 75: Piano Concerto no. 8, op. 151 “Gruss an den Rhein” / Piano Concerto no. 9, op. 177 / Introduction and Polonaise, op. 174 has no aliases.