Exactly, it should be authentic.
But when I hear some dance/house songs these days, I doubt that they are really authentic...
Kelly Rowland, your example, thought like: "I've got to do both, RNB and dancy house songs to reach as many people as possibly"... In the end, the album ended as her least selling studio album being out of the Billboard 200 after a few weeks and ended on a relatively poor No. 171 on the YEC!