SymphonicSuite[AoT]Part2-6th:ThanksAT is the 15th song on the "Attack on Titan" Season 3 Original Soundtrack Disc 1.
As with all the other OSTs, it was composed and arranged by Hiroyuki Sawano.
This song is a leitmotif of SymphonicSuite[AoT]Part2-2nd:ShingekiNoKyojin.