Sir Geraint Llewellyn Evans CBE was a Welsh bass-baritone noted for operatic roles including Figaro in Le nozze di Figaro, Papageno in Die Zauberflöte, and the title role in Wozzeck. Evans was especially acclaimed for his performances in the title role of Verdi's Falstaff. He sang more than 70 different roles in a career that lasted from his first appearance at Covent Garden in 1948 to his farewell there in 1984.

Falstaff is a comic opera in three acts by the Italian composer Giuseppe Verdi. The Italian-language libretto was adapted by Arrigo Boito from the play The Merry Wives of Windsor and scenes from Henry IV, Part 1 and Part 2, by William Shakespeare. The work premiered on 9 February 1893 at La Scala, Milan.