Hey guys, between the matches in SC II at WCS Korea there is a song, which people said name was "In My Head" (and these words were main part of the lyrics :D) - does anyone know this song and is able to share link/artist?

I've been searching for it an hour now, no results TT

FML, I feel like I tried every possible tag in YT : S
Perhaps it's Korea government's stop secret. Who da fuq knows?