Valentine’s Day is just around the corner and Skype has launched “Love Mojis,” a series of romantic animated emojis, which can be used when on the service to celebrate. The Love Mojis are set to music created by Paul McCartney, who used guitar, drums, synthesizers, xylophones, and his voice to make the compositions. You can watch a short video showing his time in the studio below.

McCartney talked about the process on his website:

It turned out to be a great laugh at the same time as challenging because you suddenly realise you’ve got to compress a musical interpretation of an expression into less than five seconds. It was like doing a huge crossword puzzle and coming up with all these solutions. And at the same time it was musical so it was great practise for me in the studio.