Unfortunately the guy who showed it to me managed to prize the iPhone with the app on it from my cold sweaty palms, so I wasn’t allowed to take the app away on my own iPhone. However, screen grabs taken from the video they released this week illustrate how the app works very well.
I can confirm that everything in the Spotify app works as the video showed it. It’s in fact a very simple application, but extremely easy to use and the sound is magically good. Here’s what I found: