Prolongo stands as a standout track from Air's 2013 album City Reading: Tre Storie Western, showcasing the French duo's signature blend of downtempo electronica and dreamy pop. Known for their lush, atmospheric production, Nicolas Godin and Jean-Benoît Dunckel craft a soundscape that balances melancholic melodies with sophisticated rhythmic textures. This recording reflects the band's continued evolution beyond their early 1990s breakthrough, maintaining the ethereal quality that defined their earlier work while exploring new sonic territories. The song contributes to a broader discography celebrated for its cinematic scope and emotional depth, inviting listeners into a world where minimalism meets expansive harmony. As part of an album inspired by Western themes, Prolongo captures the duo's ability to weave narrative elements into their instrumental and vocal compositions.