I can't seem to put my finger on it, but I know when I heard the Unversed boss battle theme "The Tumbling" that I'd heard part of it before, in one of the other games.

 

Here's a video for reference, the part that sounds really familiar is from 0:32 to 0:50 or so.

 

http-~~-//www.youtube.com/watch?v=eLlZ9P14qwM

 

I realized it sounds slightly similar to part of the music in Hollow Bastion, from 0:30 to 0:34

 

http-~~-//www.youtube.com/watch?v=4nlCNVewMjA

 

But I can't shake the feeling that the two aren't similar enough. I feel like there's another piece of music in one of the games that's almost exactly like the excerpt from "The Tumbling."

 

Can anybody help me out with this?

I played both at once. Made a pretty nice mashup

They have very similar rhythm and the way accompaniment tune goes. (Have no idea if I used right term)

 

Very intresting.. This is kinda usual that one composer likes to use somekind of rythm or melody to his/her songs and people can relate two songs better