Song: Evelyn, Evelyn by well...Evelyn and Evelyn. Conjoined twins so derp :P
Reason: Deeper voice is ivypool higher one dovewing. It explains itself, really.

Btw, I'm pretty sure theyre both girls. Cuz like, when the deeper voice goes"do you think I should marry him?" i think it sorta gives it away.

https://www.youtube.com/watch?v=vrgXXWEQf9k