This is the most interesting piece of data, given MTV’s sad history in the ’80s of playing videos by black acts. And 1988, the year Yo! MTV Raps premiered, was something of an inflection point.

Broadening “black” music to include R&B and Whitney-style dance-pop, I remember vividly that even that stuff was rare on the channel, Prince and Michael notwithstanding, as late as 1985. I recall being surprised when they started playing Whitney’s “How Will I Know” and Lisa Lisa’s “Head to Toe” in the spring of ’86.

It’s been well-reported that the twin forces of “Beat It” and “Little Red Corvette” were what forced MTV into playing black music back in 1983; but what’s not well-reported is that they continued to regard those two acts as exceptions to a hidebound rule for a few more years after that.