Mariah Carey's "Rainbow (Interlude)" serves as a vibrant interlude on her 1990 album *Rainbow*, showcasing her signature melismatic vocal style and pop sensibilities. Released during a period where she was transitioning from her earlier R&B roots to a more polished pop sound, the track features her characteristic high notes and intricate runs that defined her career. While not a single from the main tracklist, its inclusion highlights the lush production and emotional depth characteristic of the album's era. The song complements other tracks on the record, contributing to a cohesive sonic landscape that celebrated her vocal prowess and evolving musical identity in the early 1990s.