“Only in My Dreams” is an atmospheric and melodic pop song with a bittersweet, emotional mood. A steady rhythmic pulse, layered harmonies and spacious production create a dreamy backdrop for the expressive vocals. The arrangement starts relatively restrained and gradually develops into fuller and more intense sections, building a strong sense of longing and emotional release. The song captures the feeling of yearning for someone or something that seems reachable only in dreams, combining melancholy with a sense of hope.