[Blaine doesn't give any explanation. He's just at his keyboard, the plain wall of his apartment behind him. He starts playing and singing.]
Happy birthday to you.
Happy birthday to you.
Happy birthday to anyone who's birthday it is today.
Happy birthday to you.
[He tilts his head a bit, grinning at the camera before he turns it off. If it happens to be a certain someone's birthday, he's not telling.]
[ooc; this post comes with visual aids!
Under the cut is a video that is basically what Blaine just did (thank you universe for making Darren Criss love YouTube.) When you view it know that Blaine would never let his hair go that free and also wouldn't wear the shirt that Darren is. Still, everything else is perfect:]
Click to view