This is the cursed record, btw. It even has its article on Japanese wiki, but I have no idea why. Then again, you can't be bound by common sense in Gensokyo.
Such horrible singing...This is... a curse! What a strong volume...Yuck.. Who made this...freaky record!Leader of the brats ~ ♪ Invincible
I am Gian ♪
Referencing an insert song in Doraemon