With new lyrics, it has possibly become Lehár's most famous single song, popularised by Tauber, who sang it at almost every recital he gave, often as an encore. When Löhner-Beda re-arranged the operetta, he moved Prince Sou-Chong's passage from act 1 to act 2. Written in D-flat major, Lehár had composed parts of the song already in 1923 when the original version of the operetta premiered under the title Die gelbe Jacke (The Yellow Jacket).
The aria has been sung in Italian (as 'Tu che m'hai preso il cuor' ) by a few operatic tenors, notably Giuseppe Di Stefano, Mario Del Monaco, and Luciano Pavarotti. An American version of the show opened on Broadway in 1946 starring Tauber but it soon closed as Tauber had throat trouble. The aria is sung by the character of Prince Sou-Chong in act 2. It was for many years associated with the tenor Richard Tauber, for whom it was written. ' Yours Is My Heart Alone' or ' You Are My Heart's Delight' (German: ' Dein ist mein ganzes Herz') is an aria from the 1929 operetta The Land of Smiles ( Das Land des Lächelns) with music by Franz Lehár and the libretto by Fritz Löhner-Beda and Ludwig Herzer. Sheet music with Franz Lehár's inscription to Richard Tauber, August 1929
