The first one is Josephine Baker, check your music History guys, she paved the way every single female singer out today, the very first black sex symbol, she is one of the most famous dancers and was successful in Europe as a singer as well. She made funny faces while dancing on purpose, that's why Keri tried to do the same. She is one of Beyoncé's main inspirations & Bey paid tribute to her as well during her Fashion Rocks performance of deja vu in 2006 & with the deja vu video. The second might be Josephine again or Sarah Vaughan or some Jazz singer. She did Diana twice. It would have been fun if she used much more singers including the ladies out now today. Cute video.