Your reaction was good but you half of your voices guess were false... first "low part" was Ni-ki then Sunghoon, second one Ni-ki then Sunoo. The falsetto with echoes parts were made -the first- by Jake then the second by Sunoo.
Thank you for the corrections! I normally don’t get the voices right until like the third or fourth listen. Unless I’m watching them on the mv and not as animations 🥰