BTW, what we have yet to hear is a convincing example of blues or soul with melisma, i.e., bending a syllable into several notes. The focus seems to be, not surprisingly, on pop at this stage.
Melismata are no problem at all, you can make a whole song with them over one syllable.
For me it's more of a problem to write a real blues with bluesy lyrics because I don't have the blues, I'm in an air-conditioned room.