Mozart’s Aria Ch’io mi scordi di te” was composed for the unusual combination of solo voice, piano obbligato and orchestra. Mozart wrote it on December 26, 1786, intending to perform the piano part himself with the young English soprano, Nancy Storace. Months earlier, she had sung the role of Susanna in the premiere of The Marriage of Figaro, and there has long been speculation that Mozart was in love with her.
Ms. Storace and Mozart performed this together early in 1787, shortly before her departure from Vienna. It is his farewell to her.
Personally I don’t have much interest in the text. If you do, look for a translation into English which I have seen online.
And here is soprano Cecilia Bartoli to sing this for you: