Just because she's not doing vocal acrobatics doesn't mean she can't sing and isn't a good artist because she proved herself with Rockabyebaby in my opinion. Her lower register came out of no where and is slaying it and it's unique like her robotic icy voice full of character which gives her sound the special factor to go along with her unique look. Jennifer Hudson does all of those vocal acrobatics but she makes a horrible artist. Cassie is actually a good musical artist.