In a feature I hadn't paid attention to while overseas, NPR has over the past year offered "Exclusive First Listens" to entire new albums on line. Today: an hour's worth of Blood From Stars by the wonderful bluesy guitarist-singer Joe Henry.

The trick is that the full-length streaming audio is turned off once the album officially goes on sale. Thus the past-events listing includes full-length sessions from Leonard Cohen, Bruce Springsteen, Neil Young, Moby, etc -- but none of the music is still there. (The oldest still-available entry is from one week ago.) If you click on the older sessions, you're taken to an Amazon or iTunes purchase site. Fair enough: this is one more interesting twist in the vast, varied, and necessary series of experiments now underway to see how "content," from music to movies to news articles, can be "monetized" in the age when so much of it can be copied or used for free.

I mention it for that reason -- and also because anyone who, like me, hadn't known of the feature might find it worthwhile. Certainly this Joe Henry music is great. Check it out while it is there.