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
