Il mio tesoro intanto is a celebrated tenor aria from Wolfgang Amadeus Mozart's opera Don Giovanni, which premiered in Prague in 1787. In the opera Don Ottavio sings it while vowing to comfort Donna Anna and avenge her father. The aria became one of the opera's best known solo pieces and a standard showcase for lyric tenors. Short excerpts now circulate online detached from the full opera, where the Italian title alone signals devotion, longing and high drama in a few seconds.