Where is Ms. Carter from? Detroit. Say it with me: More than Motown and cars came out of Detroit!
Yacouba Kissoko plays the kora. In case you didn't know, (I didn't) the kora is a harp-like instrument from West Africa. You can learn more about the kora from Wikipedia.
Wil Holhouser plays the accordion. I have always associated the accordion with polkas and Steve Urkel.