That's Mary Bridget Davies, a blues singer from Cleveland — she's pictured with Michael Bay at the Parkview Nite Club at about 0:16 — who is starring as Janis Joplin in "One Night With Janis Joplin" on Broadway. It's her Broadway debut, and if the Couric interview above is any indication, New York City hasn't affected her Cleveland sweetheart vibe in the slightest.
Critics have said that Davies channels Joplin perfectly, not only recreating her vocals but totally assuming the persona. See for yourself in this highlight video from the show.
