His is a painting full of symbolism, from which light forms and figures, apparitions and dreamlike evocations emerge. As Achille Bonito Oliva argues, on the crest of a language that is both abstract and figurative, Gallo leads the world's gaze towards a surprise, played on the smoothness and arrest, the fluidity of color and the pause of a recognizable element. A sort of musical movement assists his painting, An andante but not too much", the rhythm of a work, which foments abandonment and attention ".