Swift's rep, Tree Paine, tells PerezHilton.com:
Wow. Wow. Wow.
Kanye is straight-up INSANE!!!!!
Slip those arch-supporting sneakers on, cause the AWEsome Nikki Williams is about to run you ragged in the BEST way possible!
The supreme singer/songwriter recently stopped by and aurally pleasured us with some special, live performances of her delightful ditties…
One of which was a sweet, soulful version of Run, Run, Run!
Open your ears (and your hearts) to Nikki Williams (above)!
SO obsessed with this South African native and her rich-as-fudge tunes!