Lucia di Lammermoor is an opera composed by Gaetano Donizetti, first performed in 1835. It is based on the novel "The Bride of Lammermoor" by Sir Walter Scott. The story is set in Scotland and revolves around the tragic love between Lucia and Edgardo, who belong to feuding families. The opera is renowned for its beautiful arias and dramatic moments, particularly Lucia's famous mad scene. It explores themes of love, betrayal, and the consequences of family loyalty. Lucia di Lammermoor remains a staple in the operatic repertoire, celebrated for its emotional depth and musical brilliance.