This Cracker Barrel waitress can really nail a tune! Server Miranda Willmore left a group of diners amazed with her chops after she broke into a high-flying rendition of “Happy Birthday” for a customer. Diners and staff around the restaurant stopped to watch in awe and she brought down the house with her beautiful voice. “Find this girl and make her famous please. Best birthday song ever!” wrote Jared Gravatt, who posted the video.