Frank Kogan

Of course, the person who produced "Bad Girl" was Japanese, whereas the producers of the K-pop version of "Genie" (as opposed to the Uzbek or the Dutch) were Korean, at least according to Wikip.

And I really have no idea what it is that makes something "sound K-pop" to me. I made a K-pop mix, and Jewelry's "One More Time" fit right in, despite its arrangement having been lifted substantially from the Italian Eurodance original (the Jewelry version does flow better rhythmically, and the accordion hook takes an upturn that the it doesn't in In-Grid's; but I'm not really hearing the rhythm containing different beats so much as using different timbre; however, I haven't sat down to do an in-depth comparison yet).