Vesselina Kasarova : Vesselina Kasarova - La clemenza di Tito - Non più di fiori
Vitellia's rondo from Act II. Frau Kasarova's usual role in this opera is Sesto but listen how she does Vitellia! (Though for the sake of her voice I hope she'll never attempt her on stage.)
This aria together with many other gorgeous Mozart pieces is available on Kasarova's RCA Red Seal CD 'Mozart Arias'.