If you weren't jealous of Ellen DeGeneres before, you will be now! Adele stopped by her talk show on Thursday and ended up recording the host's outgoing voicemail message. While we all know Adele has an incredible voice, this spontaneous bit might actually give you major chills. After asking Adele to do a funny spoof of her hit single "Hello," the singer took it up a notch by bursting out into song. See the full video above, and then check out her recent hidden camera prank on the show.