"Snitches Get Stitches"

Somebody be singing, others need urgently to know. John McWhorter lays it down for us:

Here are the kinds of phrases that so many Black kids know and use effortlessly, phrases that are richer than standard English in many ways: “He be singin’”; “He done sung”; “He had sung and then he had gone quiet.” 

All three sentences are examples of how Black English expresses shades of actions in ways that standard English leaves more to context. 

“He be singin’” refers to someone singing regularly; you wouldn’t say that if someone were singing right in front of you. “He done sung” doesn’t simply refer to the past but to the fact that his having done so was something of a surprise, or something people urgently needed to know.  

Used on verbs one after the other in sequence instead of in the past-before-the-past pluperfect way that we use it in standard English, “had” in Black English indicates that one is telling a story; it is a narrative marker. None of this is broken. It is just different.