Missy's solo sound was built with studio whiz Timbaland, but the trailblazing rapper is an accomplished producer in her own right. Her credits include Mary J. Blige's soul gallop “Never Been”, Beyoncé's moony R&B serenade “Signs” and her own electro-hop “Lose Control”. But the poppin' “Lady Marmalade” best manifests her signatures: disjointed breaks, urban futurism and feminine synchronicity.