Trisomie 21 is a group by Philippe and Hervé Lomprez, two brothers from Lille, France. Some people consider their music to be gothic, or French coldwave. Throughout the 1980s and '90s, T21 was signed to PIAS Records.
Their most popular songs are "The Last Song", "La Fête Triste", and "Il Se Noie". Their most popular albums are Chapter IV, Works, Millions Lights, and The First Songs Vol 1 & 2.