"Rosina" is a character from the opera "The Barber of Seville," composed by Gioachino Rossini. She is a young and intelligent woman who is in love with Count Almaviva. Rosina is known for her cleverness and determination, often outsmarting those around her. In the opera, Rosina is kept under the watchful eye of her guardian, Dr. Bartolo, who intends to marry her for her fortune. With the help of Figaro, the barber, she devises a plan to escape her guardian's control and pursue her love for the Count, showcasing themes of love and freedom.