Black English is also intonation, which is a powerful rhetorical tool.
Wardrobe, mannerisms, and intonation are fair game, and Chu certainly has his detractors there.
You can say it on the radio because you have the voice and the intonation, but that is totally different in print.
1610s, "opening phrase of a melody," from French intonation, from Medieval Latin intonationem (nominative intonatio), from past participle stem of intonare (see intone). Meaning "modulation of the voice in speaking" is from 1791.