Go to the 6:25 minute mark when they are talking with the photographer about the truth between her and Kusaka. It sounds like they ripped the music right out of W.

Now I get ya. It sounds very double-esque but its different enough to not be just a track from double. The similarities will most likely come from the fact that the composer for drive is the same one that worked on double.

Just finished watching this episode, I am loving what's going on right now with the added deeper mystique and intrigue in Machine Chaser. Also added with the deeper relationship between the members of "Kamen Rider Corps" so to speak. I feel when it's all said and done (if not already), Drive >>> Gaim for me. Love the balance of build-up and pace of the show thus far, pieces are now just starting to fit together and it'll only get better from here IMO.