I am not able to find reliable, widely documented information about an artist or band named "Julliany Souza." Because public, verifiable sources appear limited or unavailable for that name, I cannot provide a standard encyclopedic entry with genres, origin, or period of activity without risking inaccuracy. If you can provide additional context (such as country, notable recordings, or associated acts) I can help craft a concise, factual description based on that verified information.