Ah, I didn't recognize anything on 21, but the opening track on 25, that I know. What I said previously on 21 still holds: she has a great voice, the background music is nice (because it is simple melodies, most of the time just a piano supporting her voice) and it sounds overall out of time. It's still not my cup of tea, but I can appreciate why she's so well known.
I remember enjoying 21 when I listened to it courtesy of this list, and this follow up is pretty much more of the same. The music has developed into a slightly poppier sound, even touching on a gospel sound on the track River Lea. She still seems to be singing from the perspective of someone much older than the 25 years of age that she was at the time, with a remarkable amount of wisdom and insight. Not really my usual listening but a fine album nonetheless.