Well I don't know about that either. Lol She wants more like classical music or light country music played at our wedding. (We both like a variety of music, but I really just don't like rap or pop.)
But that particular song I actually liked the very first time I heard it. I also actually learned it on guitar a couple weeks ago, and I especially love that eerie sounding intro. They use organs in a lot of their earlier music, too, to add to that eerie tone.
For Today has a LOT of really good worship music though as well as Wolves at the Gate. When I hear some of their music I can't help but praise God at the top of my lungs and sometimes learn the songs on guitar to play along. I think that's why it hits me hard when people call this music "Satanic" because that's when I feel closest to Him is when I'm worshiping Him by being led by that music.