Board Thread:Episode Discussion/@comment-4010415-20170717151617/@comment-4010415-20170720155750

The voice singing Sun's parts hits lower notes than Jeff tends to hit when he isn't scream-singing, and whenever Jeff starts raising his voice to sing louder, he also raises the pitch of his voice, whereas the voice singing Sun's parts doesn't hit the same high pitch that Jeff does when singing louder. I definitely think it's Lamar.