Camille du Locle (1832-1903) was a pivotal figure in the world of opera, particularly known for his contributions as a librettist and director. Most notably, he is celebrated for his role in the original production of Bizet's "Carmen" in 1875, a landmark work in the operatic canon that continues to be a favorite among collectors of physical media. His efforts in bringing to life the libretto of "Don Carlos" (originally composed by Verdi) after Joseph Méry's passing further solidified his legacy, making this title a sought-after gem in any collection. Collectors are drawn to du Locle's work not only for its artistic merit but also for the historical significance tied to the productions he oversaw. His influence on operatic masterpieces and collaborations with notable composers like Bizet and Verdi make his contributions invaluable. High-quality recordings of productions such as "Don Carlos" from the Opéra Royal de Wallonie-Liège (2020) are especially prized, showcasing the enduring relevance of du Locle's vision and the timeless appeal of the operatic form.