Seven Force shares the same favourite SotN music duo as me, hooray!
Crystal Teardrops is so good, the organ bit at the end practically ensures that i'm left standing by the area exit and not leaving until its finished. As for the area itself, I love the thin sheets of ice over some pools of water that you can just smash through, SotN is full of little details like that.
Gotta agree with that. Crystal Teardrops is one of my absolute favorites from SotN.... well that and Lost Painting.
Also, from your list Nocturnowl, Cross a Fear is definitely my favorite from Rondo as well. The song is just awesome. It's funny to me, I beat the Rondo of Blood remake on PSP and paid no mind to the song when I got to Stage 2'. I went along not thinking anything special. It wasn't until I played the original version and got to Stage 2'. I heard the original with all of the original synths and I instantly loved it. I have replayed that level so many times now heh.