Euphonia, or the Musical City: Tale of the Future, Hector Berlioz’s novella from 1844, is a testament to how the composer imagined a perfect city drawing from both the musical past and his autobiography. Euphonia envisions a community of artists striving for musical perfection, which is demonstrated during a recurring festival honouring Gluck, Berlioz’s first musical idol. Composers carefully monitor musical preparation, and only knowledgeable audiences attend concerts. Berlioz’s visionary, futuristic utopia is built on nostalgia for an alternate musical culture and recent musical heritage. This imagined city arose from the composer’s experiences in the urban locales where he lived. Euphonia is Berlioz’s dream to musically revisit La Côte-Saint-André, his native city, while it also expresses a desire to engage with the nostalgic aura of the German mountains. Nostalgia seeks to build alternative realities as a response to the bittersweet memories of times gone by and the perception that the culture of the present is declining. Rather than being solely directed at reminiscing about the past, the power of nostalgia relies on its ability to create the promise of a better future. Despite that Berlioz continued to enrich his artistic outlook in Paris, the composer also faced frustrations with the musical establishment in which he worked and about which he wrote. Berlioz considered that in Paris popular opinions and habits of the musical world had tarnished music’s integrity. As it became clear that his musical ideals were not met in the real world, he imagined a perfect city-conservatory, Euphonia, where Berlioz countered the artistic realities and hardships he faced in Paris and in exchange imagined new spaces where his ideas would flourish. The utopic yet so nostalgic city of Euphonia, like Berlioz’s music, commemorated the musical values of past eras and anticipated a future of creative possibility.