Individual songs from some of the operettas have become standards , notably `` Vilja '' from The Merry Widow and `` You Are My Heart 's Delight '' -LRB- `` PERSON@1 ist mein ganzes Herz '' -RRB- from The Land of Smiles .

Some of the songs from his operettas have become very well-known , especially `` Vilja '' from The Merry Widow and `` You Are My Heart 's Delight '' -LRB- `` PERSON@1 ist mein ganzes Herz '' -RRB- from The Land of Smiles .
