Kelly can you please enlightened me as to why the following mixed race singers/rappers have not had any success in the music industry or gone global yet?

Mz Bratts
Leona Lewis (Cher is walking all over her)
Cleo Sol
Rebecca Ferguson
Ms Dynamit
Shola Ama
Nye (Still trying to get a recording contract after years on the circuit best friends with Tulisa but she can't even pull strings)
Lady Nye
Marcus (what's his face from Xfactor)
Ironik
Fazer
Roxxanne
Tanya Lacey
Kyra

I could go on and on but felt I have made my point.

Get real.