Looks like today isn’t just the day after Christmas, but it’s also the “birthday” of vocaloids Rin and Len Kagamine. Sega released a new trailer of the upcoming PS3 version of Hatsune Miku: Project DIVA f  in order to celebrate.

The trailer features two songs, each sung by one of the two virtual twins, and as usual they’re definitely catchy (more so Rin’s than Len’s, in my opinion), so watch it below at your own risk. Don’t come complaining to me if they stay stuck in your head until you evict them with a hammer.