Last fall, Skype took the emoji and sticker craze and ran with it, introducing a new animated emoticon the company simply called the "Moji." It's basically an animation coupled with an audio clip, and they launched with big content properties like The Muppets and Jurassic Park. Now, to go along with Valentine's day, Skype has a new set of 10 Moji it designed to convey the feelings of the holiday in a bunch of ways, Engadget reports.

What's perhaps most interesting about these new animations is the big-name talent Skype recruited to do the sound that accompanies them: Sir Paul McCartney actually composed little 5-second ditties to go along with each, doing both sound effects and bare bones music. In a video, McCartney admits it was a "strange proposition" and that making music to fit the animations was "really challenging, but he's overall pleased with how they turned out.