Question: Zimbabwean singer/songwriter and member of the band Door Policy, Takura, co-wrote the song "Wait Your Turn" in 2009 for what singer's fourth studio album Rated R?
Sentence (from "Takura"): His guest appearances have accumulated over seventeen million YouTube views, and "Flashing Lights" has charted in the United Kingdom at number 98 in the UK Singles Chart and number 15 in the UK Dance Chart.
Relevant evidence: No