Well I've done it - over lunch break I went for the first 25 minute run of my life!
Like so many before me, I would never have believed I could do 25 minutes in one go when I started. It's very encouraging to read of other people's experiences.
Another three next week at 25 mins seems doable and then up to 28 and then 30 doesn't feel like such a big step as the other ones.
I'll need to be a bit more selective with the playlist. I listened to "The Black Album", and the first four songs were excellent and I really felt I could match my stride to the music (and "Enter Sandman" is excellent for the warm-up walk). However after that, it tended to go into slower songs that had a more complex rhythm, so didn't have that propulsive feel.
Though I'm mainly a classical fan, in general classical music has too much variability in pace and dynamic to be good for running. I think I might mix some Bon Jovi in with the Metallica next time!