"Il barbiere di Siviglia" is an opera composed by Gioachino Rossini, first performed in 1816. The story is based on the play by Pierre Beaumarchais and follows the clever barber, Figaro, as he helps the young Count Almaviva win the heart of Rosina, a beautiful ward of the old doctor Bartolo. The opera is known for its lively music and humorous plot, featuring themes of love, deception, and cleverness. It includes famous arias like "Largo al factotum," showcasing Figaro's charm and wit as he navigates the challenges posed by Bartolo to achieve the lovers' happiness.