Ah, ah, could it be that we have cornered the infallible Sans-san?! We've driven a stake right into the heart which may or may not be there?!

[ Now, it was clear he was teasing for effect, poking the bear so to speak. But he laughs at the end of this, flipping the phone around in his hand before going on to then next question, which is - ]

So when was this singing escapade, and could there be more karaoke?