what is name of soundtrack in Attack on Titan episode 18 arround around 19:50?


I started watching Attack on Titan and this soundtrack started playing when
the " Titans" showed up at Armin Arlert's group, around 19:51 of episode 18.
What soundtrack is this?




The music at this scene seems to be a variation of the second half of the song
凸】♀】♂】←巨人 : <https://youtu.be/CVk770kdp3A?t=136> \- the song from the OST
contains some sound effects which are not heared in the scene itself.




The music at this scene seems to be a variation of the second half of the song
凸】♀】♂】←巨人 : <https://youtu.be/CVk770kdp3A?t=136> \- the song from the OST
contains some sound effects which are not heared in the scene itself.

