Place this clip as the reaction line right after the awkward singing attempt itself, then follow it with a bruh button for the deadpan payoff. For a longer sequence, lead in with goofy ahh sounds before the attempt so the comment closes the bit.
關於此聲音
A roughly ten-second vocal clip built around the Russian phrase that translates as it's like he's singing, delivered as a casual spoken comment on someone else's noise. It lands as amused and lightly teasing, the kind of reaction you use when mumbling, humming or off-key effort suddenly starts to sound like a performance.