I like the joined FD. Personally I think the whole "three-round-and-one-sqared-corners"-thing is a tad used up, but it works since it's basically a framework for the real logo. I think the type need some work though, A little less hostile typeface maybe? Not shure which you've used, but it's meaner than helvetica and it looks like it's comming to eat me! YIPES!
A Beethoven symphony uses only some or all of these notes A, A#, B, C, C#, D, D#, E, F, F#, G, G#.
and so does many songs from The Kings of Leon, The Killers, Wolfmother and Shaking Stevens.
I don't see them creating any 'new notes' only different ways of playing and interperating them. That's modern.